Tsuchimikado Motoharu

Tsuchimikado Motoharu (土御門 元春) is a recurring character in the Toaru Majutsu no Index series. Kamijou Touma's next-door neighbor, he is a student of A Certain High School's Class 1-7 alongside Touma and Aogami Pierce. The three of them are called the Three Idiots—Delta Force.

Initially referred to off-handedly as Touma's other classmate and neighbor (though in the anime is shown earlier as a recurring side character), he is later properly introduced during the Angel Fall Arc, as a spy for several organizations, most prominently Academy City and Necessarius, and as the first known Magician-Esper hybrid. After the events of the invasion of Academy City, he later becomes an important character in the events of Toaru Majutsu no Index, and becomes a member of GROUP, which he joins to ensure the safety of his beloved stepsister Maika.

Etymology
Motoharu's last name is derived from the Tsuchimikado clan, who took control of Onmyoudou in the 11th century, up until the middle of the 19th century, when it was prohibited by the government.

Moreover, his name is part of the theme of the Tsuchimikado family being based on seasons. Part of his name (春), can be translated as spring.

Appearance
He has blonde hair and is always seen with sunglasses and a gold chain around his neck. He wears shorts and only a green shirt with white floral patterns, reminiscent of stereotypical Hawaiian shirts, when not in his school. However, he wears the shirt along with his winter uniform. His appearance is due to the fact that he wants to be popular with girls, however, because of this he is mistaken as a delinquent.

Personality
As the meaning of his sorcery name indicates, he is a trickster and liar by his own admission, willing to betray anyone if it helps him. Maybe because of this attribute, he has survived being a multiple agent of various factions.

He takes his job seriously, willing to abandon being a magician by becoming an esper for the sake of the Church. He works behind the scenes to keep the balance of the two sides, and takes it hard when he fails, subtly telling Touma that the conflict with the Roman Catholic Church and Academy City started not because of Touma but because someone (Motoharu) behind the scenes didn't do their jobs.

Regardless of being a serious magician and a spy, Motoharu enjoys being a high school student. He is with good terms with Kamijou Touma, and with his classmates, and gets into various shenanigans with them. However, he shows he has a caring side, and that is when regarding his step-sister, Tsuchimikado Maika which he dotes on and loves, and is the reason why he is referred to as the Siscon Sergeant, due to his behavior with his step-sister. And it shows, as he easily gets jealous when Touma and Aogami Pierce where referred by Maika as Onii-chan. Maika is also the reason why he has somehow stayed loyal to Academy City, and puts his life on danger for it, in order to protect the world Maika lives in.

Before entering Academy City
According to him, Motoharu was an agent of Necessarius, as an Onmyouji Professor specializing in Feng Shui, and up until his graduation in middle-school, stayed in London most of the time. He is fluent in both Japanese and English, and upon Kanzaki Kaori's joining of Necessarius taught her how to speak English.

In Academy City
He is later ordered to become an esper and infiltrate Academy City as a spy for the Church. Despite knowing the dangers of becoming a hybrid, Motoharu goes forward with it as the balance between the two sides were at stake. Tsuchimikado Touzu and Tsuchimikado Bishu become his fake family that is outside the city. The latter tells Bishu that it would fool the intelligence department of Academy City if he were to get a girl for an orphanage from outside of the City to pose as his sister. Motoharu doubted that it would only work for three days, though Bishu says that it is enough time. Motoharu finds Maika, choosing her as her circumstances made it easy for him to fake official records. He promises to do anything for her within his means if he follows his instructions, though Maika does follow him, she rejects Motoharu granting her wishes for him, stating that it should be given to someone who truly needs it.

After entering Academy City, he was caught not in three days but a mere 36 hours. To ensure his survival he instead became a multi-organizational spy and was forced to watch his back for assassinations from both magic and science sides. With Maika, at first, the two lived in separate dorms. Motoharu analyzed that she wanted to be useful and further analyze that it was her fear of being abandoned that brought this. However, Motoharu realized that though she wanted to be useful, it is not because of the fear of abandonment but because she was truly kind. This epiphany made Motoharu realize that Maika was truly being a family to her and need not analyze her as some stranger. From then on, Motoharu silently swore that he will truly protect Maika as his little sister. It was Motoharu that suggested for Maika to go to Ryouran. He even indicates that she is the only one he will not betray.

To become a spy for the Church, Motoharu required to become an esper. He joined the Power Curriculum Program as a Level 0, rendering his usage of magic dangerous. He later enrolls into A Certain Highschool, and was set into Tsukuyomi Komoe's Class 1-7, along with Touma, and Aogami Pierce, and became good friends.

There, behind the scenes, he manipulates information for several organizations, such as for Aleister Crowley and the Anglican Church. People like Kanzaki Kaori apparently knows of his status as a spy, though it is unknown why he hasn't been reported or eliminated yet. It can be assumed that him being a spy is known but not public, and that he is too valuable to eliminate,, or that people have tried, but Motoharu manages to slip away. For the most part of the story, he is aware of the Imaginary Number District, as well as having exclusive access to Aleister Crowley in his Windowless Building. He is also aware of Touma's various trials, such as his rescue of Index, his assault with Stiyl Magnus of Misawa Cram School to rescue Himegami Aisa, as well as Touma's hand in the shutdown of the Level 6 Shift and his defeat of Accelerator.

Index Arc

 * Main article:Index Arc

In the anime adaptation, Motoharu is introduced alongside Aogami Pierce, making fun of Touma being punished by Komoe. In the light novel, he is referred as being Touma's neighbor, and before discovering the truth, assumed that the bloody Index that was in front of apartment porch was Motoharu's vomit.

Deep Blood Arc

 * Main article:Deep Blood Arc

Once agian for the anime adaptation, Motoharu comes along Aogami, and commenting on Touma's relationship with Index. He and Aogami Pierce is later taken to a fastfood restaurant, due to Index, and is allowed to buy food, due to Touma paying for them all. They later discover Himegami Aisa, where he, Aogami Pierce, and Touma, play a game of rock, paper, and scissors, in order to determine who gets to talk to help Aisa, who just lost all her money. Motoharu is not seen again after Aisa is taken by the teachers of Misawa Cram School.

Angel Fall Arc

 * Main article:Angel Fall Arc

As his official debut, he comes to the beach with Kanzaki Kaori, as agents of Necessarius, being the only ones who are and are apparently able to deal with Angel Fall. He and Kaori where in Windsor Castle, and were able to detect and protect themselves at the advent of Angel Fall.

In the original novel, Motoharu is the first person Touma meets that to him is completely normal, and warns him that Kaori is after him, as they have tracked the source of Angel Fall near him. After clearing up Touma's confusion of him being a spy and a magician, as well as his innocence, they later retire for the night, where Motoharu is forced to hide himself due to being in the form of Hitotsui Hajime. He berates Kaori's attitude towards Touma, telling him to be more thankful and trust him. After Hino Jinsaku's failed attack on Wadatsumi, and meeting Misha Kreutzev, they later agree on making Jinsaku the prime suspect of Angel Fall. They later travel to Touma's neighborhood the next day, as they see that Jinsaku has invaded his home, and with him leading the way, stealthfully make their way, from the police present. During the time where Kaori tries to setup a spell to distract the police, he discusses to Touma regarding feng shui and onmyoudou, as well as Kaori's history, telling Touma not to say his "such misfortune" catchphrase, as Kaori laments her own great fortune. Him and Touma later invade his home in the ground floor, while Kaori and Sasha take the second floor. Motoharu sees the queer charms that Touma's father has collected but is apparently too occupied to take action. They later get attack by Jinsaku, and with a little bit of fighting, take him down. After Touma discovers Touya is the culprit of Angel Fall, he is later left alone with Jinsaku, telling Touma and Kaori to go after her. He later returns to the beach, during Misha being discovered as Archangel Gabriel, and later leaves Kaori to fight Gabriel on her own. In the Wadatsumi beachhouse, he drugs the denizens, there including Index, and Touma's cousin, and later tells Touma that Touya did indeed cast Angel Fall, but purely by chance, and that to stop Angel Fall, and stop Gabriel from destroying civilization itself, the ritual location, which is Touma's house filled with charms and idols, need to be destroyed in one blow, and indicates that someone needs to be sacrificed. Seeing the implications, Touma and then later Touya, fight him, but is quickly dispatched. Soon after, Motoharu shows to Touma who the one that needs to be sacrificed, himself, and uses magic, knowing that it would injure him. Touma tries to stop him, but the spell activates regardless, destroying Touma's house, and ending the crisis. Motoharu later visits Touma in the hospital, much to the latter's surprise, and shows him his ability, Auto-Rebirth, an esper power that heals him, though he is still Level 0, and that using magic might kill him. He leaves later, as Index, angered by Touma's actions against her (since she was in the form of Aogami Pierce), invades Touma's ward.

The anime adaptation, removes the entire Jinsaku subplot, allowing Motoharu to explain to Touma not to say his "Such misfortune" line later on, and as well as extremely limiting the explanation regarding Onmyoudou. In the anime adaptation, as Touma, Misha, and Motoharu, discover that Touya is the culprit behind Angel Fall, Touma's mother discovers Motoharu and hugs, as she is a fan of him (being that Motoharu is in the form of Hitotsui Hajime), forcing Motoharu to be left behind. It is unknown how Motoharu got Shiina safe from the eventual destruction of her home. Later, as Motoharu arrives in the beach, he does not talk with Kaori after discovering that Misha is an angel, and remains hidden from her, as he begins planning to stop Angel Fall.

Three Stories Arc

 * Main article:Three Stories Arc

With Aogami Pierce, he makes fun of Touma for not being able to finish his summer homework, this later devolves into fighting in the original novel, as he discovers that Maika has been calling the both of them as Onii-chan. He and Aogami are later mouth agape, as they see Misaka Mikoto, come upon Touma, who later drags him away.

Motoharu is later mentioned being contacted by Touma to deal with the Aztec Magician he just defeated.

Kazakiri Hyouka Arc

 * Main article:Kazakiri Hyouka Arc

Motoharu appears before Aleister Crowley in the Windowless Building, telling him that Sherry Cromwell of Necessarius, has infiltrated Academy City. He states that he will go after her, being a magician of Necessarius, allowing the balance of magic and science side not to strain. However, Aleister tells Motoharu to stay his hand, as he wants to use Sherry for his plans with the Imaginary Number District, and Kamijou Touma, much to Motoharu's shock.

After the events of arc, Motoharu confronts Aleister's using of Touma, and implicating him in allowing Sherry to come into Academy City for the sole purpose of having her and the key to the Imaginary Number Sector get involved. Aleister later states that his plans are slowly coming into fruition thanks to the events that had transpired, sickening Motoharu, who later deduces parts of Aleister's Plans, the making of an artificial heaven, which Aleister gives a vague answer to. Disgusted with Aleister Crowley, Motoharu leaves, telling Aleister not to tread on Kamijou Touma's path, as he will surely destroy those illusions of his.

Orsola Aquinas Rescue Arc

 * Main article:Orsola Aquinas Rescue Arc

With reports of the Book of the Law, being taken away by the Amakusa-Style Remix of Church, Motoharu is tasked by an unknown organization to steal it. Motoharu later sees the Knights of England, land upon the shores of Japan, but is quickly taken down by Kanzaki Kaori. Here, Motoharu probes Kaori's motivations for returning to Japan, but is disregarded, and is later threatened by Kaori if he ever gets in her way. However, Motoharu states that Kaori could never kill him, as she does not want to kill, and is the reason why she can never defeat him if they fought, for he is willing to risk all just to win.

During the Assault on the Church of Orsola, Motoharu once again meets up with Kaori, and tells her that the rumors about the Book of the Law were false, as it was deliberately spread by the Roman Catholic Church to implicate and allow them to persecute the Amakusa Church and Orsola Aquinas. Here, Motoharu asks Kaori regarding her opinion on Touma with the Church, to which she states that she is a proud of them, and with Touma, would go into a righteous path.

Motoharu is later seen after the events of the arc, visiting Touma in the hospital, and teasing Kaori about being more thankful to Touma by using her body.

Daihasei Festival Arc

 * Main article:Daihasei Festival Arc

In the the arc, Motoharu along with Stiyl Magnus, as members of Necessarius, and one of the few members of the church with friendly relations with Academy Citym are sent out to deal with Oriana Thomson making a deal with the Stab Sword, and is forced to rely on a mission without Kanzaki Kaori. Touma later appears, and gives aid to the both of them, and here, Motoharu and Stiyl briefs Touma about the Stab Sword that is to be exchanged in Academy City, on how Kaori cannot be mobilized, and on Index to be kept away from the incident. Touma is the first one to make contact with Oriana, and contacts Motoharu and Stiyl. They give chase, but later end up in an abandoned automatic bus terminal. Motoharu tells Stiyl to place rune cards on all of the buses, while he and Touma chase after Oriana, dodging spells along the way. She later disappears from their sight, but Motoharu gains one of her flashcards that she used as a clue.

Motoharu creates a magic array so they can determine Oriana's location with a 3 kilometer radius, with Stiyl performing the spell in his place. Immediately after, Stiyl is affected by a counterspell, causing him great pain. After a brief rest, he restates his determination to protect the world Index is in, and at any cause. Here, he uses the searching spell again, and though he is affected by the counterspell, the spell is able to determine Oriana's location. Discovering that it was in a middle school, Motoharu and Touma race towards there, infiltrating it and disguising themselves as students while the hectic events go on. Touma later mistakens one of the poles used in the competition as one of Oriana's spellcards, and Fukiyose Seiri pays the price for it, collapsing to the ground and enraging Touma. Motoharu later calls Stiyl to use the searching spell, telling Touma and Motoharu of Oriana's whearebouts. They later corner her after Motoharu contacts Stiyl to activate one of the rune cards that he set up on the buses a while back. At their confrontation, Motoharu is taken out of commission immediately as Oriana uses a spell that targets those who is already injured, as Motoharu was injured creating the spell previously, he collapses as Touma is forced to battle her alone.

After the battle with Oriana, Touma, Motoharu, and Stiyl meet again, with new information from Anglican Church. Regarding Oriana carrying a distraction for them, and the fact that the exchange is not actually about the Stab Sword, but of the Croce di Pietro, a powerful magical artifact that turns the territory it is established towards the ownership of the Roman Catholic Church.

They later split ways, gathering information on their own, and from here, Motoharu sees Oriana close by and contacts Touma and Stiyl, instructing them of her whereabouts using his spell, which he was forced to use on his own, injuring him further. While, Touma and Stiyl follow Motoharu's instructions, Oriana changes direction towards Motoharu, and Stiyl and Touma are unable to do anything about it. Motoharu does battle with Oriana, not being able to use any magic, his esper power utterly uses, and already injured, Motoharu is overwhelmed by Oriana. Motoharu only survives, as he threatens her that he can contact the Saint, Kanzaki Kaori, into the battlefield knowing that the Stab Sword is false, and that even if she kills him, it would all for naught, as she would've just be wasting time. Oriana leaves a bloody and exhausted Motoharu, who reestablishes contact with them, after his battle with her, sending out instructions. After, Himegami Aisa is taken out by Oriana due to the fear of Anglican agents that Motoharu has put into her, and forced Stiyl to look after her, Touma contacts Motoharu regarding the Croce di Pietro's condition of activation, where in the conversation, they come into the conclusion that the artifact might be using the stars somehow. Motoharu later confirms this after cleaning himself up, concluding that Ridovia Lorenzetti, and Oriana Thomson, are most likely using the constellations to activate the cross in some location inside Academy City. He meets up with Touma regarding this, and is later contacted by Orsola Aquinas, who has discovered the exact location where Croce di Pietro might be use in, using the constellations.

Stiyl later regroups with Touma and Motoharu after escaping Komoe. With Motoharu's special position in Academy City, they travel to 23rd School District, where Oriana would be and where Ridovia, the mastermind of the plot, would set the Croce di Pietro. Here, Stiyl tells them that it would be a bloodbath, to which Touma acknowledges. Sneaking around one of the airbases, they come upon, Oriana waiting on them for battle. Perhaps due to his exhaustion, Motoharu walks right into a trap, and forces both Touma and Stiyl to finish the mission on their own.

For the most part between Touma and Oriana's battle, Motoharu and Stiyl are unconscious. However, he later awakens as he witnesses Oriana and Ridovia's miscalculation, as the Night Parade covers the sky, preventing the Croce di Pietro to activate. Motoharu is later taken into intensive care afterwards for his injuries.

La Regina del Mare Adriatico Arc

 * Main article:La Regina del Mare Adriatico Arc

At the end of the arc, he is giving Kanzaki Kaori a report on what happened and suggesting that she owes Touma many more favors and should return it all by wearing a Maid Outfit.

Academy City Invasion Arc

 * Main article:Academy City Invasion Arc

Before the invasion of Academy City by Vento of the Front, Motoharu enjoys a pleasant highschool student day with his friends, he gets beaten up Fukiyose Seiri. In the original novels, he laters asks Index and Touma finish up the huge amount of food Maika has left for him, not knowing that she was leaving him for awhile, much to his horror. Still in the novels, he is with Aogami Pierce, in the School District 7 Underground Shopping Center, and teases Touma being with Last Order, and as their perversion begins showing, Touma runs away from them.

During the invasion, he remains unaffected by Vento of the Front's Divine Punishment, as he is too focused on his sister to antagonize Vento, he goes outside of the city, knowing that it was the only way to help with the situation. Here, he discovers that the Roman Catholic forces are planning to use Wooden Stake magic to skewer the people who have fallen unconscious due to Divine Punishment. He succeeds in halting this attack and later witnesses the phenomena of Fuse=KAZAKIRI.

At the end of the arc, Academy City has recovered Motoharu from the exterior.

Skill-Out Uprising

 * Main article:Skill-Out Uprising

He becomes a member of GROUP, and later talks and gives advice to Accelerator after their mission at ending of Dangai University Database Center attack, Motoharu convinces Accelerator that GROUP should work together in order to escape their own "prisons", the yoke of bondage of the higher-ups upon them, and expects all of its members, Musujime Awaki, and Etzali, to betray each other if they become a burden.

Document of Constantine Arc

 * Main article:Document of Constantine Arc

He, Touma, Aogami and Seiri were sent to the teachers lounge after a scuffle was discovered by Oyafune Suama, a teacher at the school. The issue was about the three boys talking about which color would suit the bunny girl better (black, white or red), but Seiri with her own brand of justice, chokes Motoharu, kicks Aogami and headbutts Touma. As punishment Suama orders the four to pick the weeds off the school grounds however Motoharu and Aogami ditch leaving Touma and Seiri to work together.

After a while of letting Oyafune Monaka and s explaining the current situation around the world to Touma, Motoharu appears and asks if she finished discussing things with him. She tells him yes and that it's his turn to take care of the rest, he pulls out a handgun from the buckle from his belt and shoots her in the gut with it causing her to fall on the ground. Shocked and angered by Motoharu's actions, Touma punches him and he falls to the ground, before he lost control Monaka stops him and tells him that she arranged for Motoharu to shoot her and that her vital spots were missed slightly. Her actions would be labeled as treason and her family and everything she holds dear will be attacked. She tells him that this decision to stop the chaos was not made as a whole from the other directors but from her own choosing. Motoharu calls the ambulance and tells Touma that they need to get moving to district 23 and there's a plane waiting for them thanks to Monaka's preparations. Touma is angry at the fact that instead of being so indirect for his help all she had to do was ask for it. Having no choice but to leave her in the state she's in, the two disappear before the ambulance arrive.

As they are head for the airport, Tsuchimikado lets him know that Maika is taking care of Index so he doesn't have to worry about leaving her behind to starve. He also tells him that they're heading to France using the same plane Touma used to get back home for medical treatment after the Queen of the Adriatic Sea incident. Motoharu explains to Touma that the thing responsible for the riots and protests across the globe is the Document of Constantine or the C-Document for short. It's an spiritual item that makes believers of the Christian faith make them believe something is the absolute truth no matter how ridiculous is it. Before Tsuchimikado can explain any further the plane's announcer informs them that they're at their destination. He hands Touma a parachute and forcibly opens the passageway door and strong winds blow right in to the plane. Touma is reluctant to jump right out the plane, but Motoharu not wanting to waste time forcibly kicks Touma's hands off a rail he was holding on too and flies right out the plane.

He later meets Touma and Itsuwa already fighting Terra of the Left and counters his taunt saying that he can come up with three different plans in ten seconds. He attacks regardless of knowing that they would be countered by his precedence spell and seemingly found the flaw in it's design but, before he could preform the check mate Academy City bombers start attacking. When Terra leaves to protect the C-Document he instructs them to go after him and destroy it while he deals with the rampaging Academy City forces. After leading a group of a dozen on a chase he uses magic to cause a error in their power suit operating system that was then transmitted to the others that would take several minutes to fix and leave them venerable to the rioters. While he was planing to start to negotiating on halting the attack when another jet containing more men arrived.

Battle Royale Arc

 * Main article:Battle Royale Arc

He meet Management inside his closet disguised office inside a department store, he posed as a client to gain entry and catch him. While he was prepared in case of an atack he was not prepared for him setting the bar a blaze. He then had Etzali search his apartment for information on contacts and business deals. In the aftermath of BLOCK raiding the apartment worried about Management's information getting obtained by another dark side organization, he then showed that he was aware of Etzali's true identity and power and realized that in the confusion he had infiltrated BLOCK when they found Yamte's corpse and give an explanation to Accelerator and Musujime. After using a reader to scan the chips that Etzli found in the apartment the found out that he was used to hire Sunazara Chimitsu and realized that the target was Oyafune Monaka. While searching for Chimitsu he and Accelerator see Last Order asking Uiharu for help looking for Accelerator, much to his announce and Tsuchimikado's amusement until he spotted Mika in the crowd as well. Suddenly the Wind Defense nearby turned off they realized that it had been done with Chimitsu's Magnetic Sniper Riffle. After the failed attack thanks to Accelerator they found the hotel room that Chimitsu had fired from already abandoned when Accelerator informs him by phone that his employer is a rival group SCHOOL.

Later they discover that other organizations existed similar to theirs and were in motion and wonder which ones were involved with the destruction of Management's apartment, the attack on the paddy wagon, which one Etzai was concealing himself apart of and why did SCHOOL try to assassinate Oyafune Monaka. Shorty there after they heard that District 5’s Virus Isolation Center was being hacked while Accelerator protest at being sent to deal with this Tsuchimikado states that the culprits is most likely one of the other groups and that they have betrayed Academy City and begin to move, while stil in root they heard that a satellite control center and conclude that they are trying to split them up. Accelerator them decides to just that despite Tsuchimikado's protests he goes in order to prevent Hikoboshi II from being used as a wepon on District 13. He and Musujime latter meet back up with both Accelerator and Etzai after the later ruined BLOCK's attempt to bring 5000 mercenaries into Academy City, where they debate the actions of SCHOOL and BLOCK before integrating a captured one of BLOCK's mercenaries as to their plans where they learn their target was the Juvenal hall in District 10 to take Musujime's comrades as bragging chips to gain entry to the windowless building and then assassinate Alister. When they arrive the split up again where Etzai stays to fight Xochitl, Accelerator goes to finish off the remaining mercenaries while he and Musujime go off to where her comrades were being held. Their the meet the leader of BLOCK Saku Tatsuhiko who then has argument with his second Teshio Megumi on how they would use the hostages ending with Tenshio knocking out Saku. Tsuchimikado tries to fight her but is easily over powered by her experience and own version of Anti-Skill subduing technique. After the fight he asks Musujime if she was alright before they both rejoined the rest of GROUP upstairs.

Latter after Accelerator's battle with Kakine Teitoku he was the one who recovered the Tweezers hiding among the crowd of onlookers. He then shares the purpose of the device and the existence of UNDER_LINE he then decode data they find information on several things relating to the Battle Royal including the existence of DRAGON.

Acqua of the Back Arc

 * Main article:Acqua of the Back Arc

He appears at the beginning of the novel with the rest of his classmates lamenting the fact they had nothing to eat, when Fukiyose Seiri comes up with the plan for all of them to run out side at the same time and spit up he pulled out a scrap piece of printing paper and immediately drew a detailed map of the school. As they ran form Gorilla-sensei he used sacrificed Aogami Pierce knocking him down as he was climbing a fence and cursed when Gorilla-sensei choose not to take the sacrificial bait.

His voice his heard in a form of a yell after Maika dumps the cream stew she made for their dinner in order to one-up Itsuwa's miso soup. He appears again at the end of light novel, Kanzaki is confused about how she should thank Touma, that is only worsened by Tsuchimikado saying to her that the only way to pay her debt back to Touma is by wearing the fallen-angel maid costume (Erotic version). Kanzaki now in a state of confusion told Tsuchimikado to bring the costume which he immediately begins to regret at seeing her reaction and ten minutes later she enters Touma's room where the "fallen angel accident" happens.

British Royal Family Arc

 * Main article:British Royal Family Arc

He calls from Touma telling him that Index is needed in England and being her caretaker Touma has to go with her. When Touma flat out refuses after what happened in Chioggia, Italy and Avignon, France; Motoharu simply throws a canister of knockout gas into his apartment and leaves them stranded at the airport, Sphinx included.

DRAGON Arc

 * Main article:DRAGON Arc

Homecoming Arc

 * Main article:Homecoming Arc

After Patricia Birdway calls Leivinia Birdway, interrupting her protracted lecture in Touma's room, Accelerator steps out of the balcony, to which Motoharu calls out for attention. Accelerator asks what he's doing here, to which Motoharu replies that he should've done his research and points out he lives next door. Motoharu states that he has some free time now after Accelerator dismantled GROUP and asks him to keep him company. After a short silence, Accelerator asks how much he knows about Freshmen, to which he says that he knows enough and had expected for a group like them to show up. Motoharu states that Awaki and Mitsuki (Etzali), is probably thankful towards Accelerator, though just won't say it. However, he points out that they many not be able to leave the problems that have been left dangling such as Aiwass and DRAGON. Accelerator then asks about his situation. Motoharu replies that he still has a lot of things to do despite Accelerator dismantling the city's darkness, and states that not only is he a spy for the science side but he is also related to the darkness of the territory Accelerator have just stepped one foot in, saying that he'll continue as the same as he was before. He promises however that he will not sink as low as the Freshmen. In the end, Motoharu thanks Accelerator for trying to help him and the other around them. Accelerator clicks his tongue in annoyance as to be expected, but Motoharu simply smiles in turn. Motoharu states that he will not stop him from entering the darkness of the magic side, but tells him that he should establish his own stance, as transcending good and evil is not an excuse for becoming some indecisive bastard who doesn‟t choose either. Then, a ruckus from inside erupts with Last Order and Misaka Worst quarreling, prompting Motoharu to retreat back into his room.

Ichihanaran Festival Arc

 * Main article:Ichihanaran Festival Arc

Eve of the Festival
Motoharu appears with Aogami Pierce doing the preparations for the Ichihanaransai, meeting up with Touma after he was dragged around town by Fukiyose Seiri, and reuniting the three idiots for the first time since the start of the English Civil War. Motoharu asks Touma what he thinks about the cultural festival, and says that things that have a cosplay aspect to it like a cafe or a haunted house is a standard in a cultural festival, and later get into an argument with both Aogami Pierce and Touma after the latter points out that they shouldn't go too crazy with what their presenting for the festival as they are being watched. Their fight however, is stopped by the timely arrival of Seiri.

During the Festival
Motoharu is near her step-sister during the time Silvia, Brunhild Eiktobel, and Leivinia Birdway pass them by. He was standing in line for popcorn, when he noticed the powerful magicians passing by his sister. Despite the danger of facing them, Motoharu tries to pull something out of his pocket, but is relieved after they only passed by, noting on how there is no way he could defeat them in a straight fight.

Agitate Halation Arc

 * Main article:Agitate Halation Arc

Motoharu predicting that Maika will be used as a tool of negotiation against him as a reprisal for his investigation of the Agitate Halation Project, is forced to use dark side tactics to protect her, something that he never hoped to do. He forces her to believe that she has to clean an automated factory in School District 17 as an extracurricular activity. He then fakes her death by burning her dorm and having the media and the dark side believe that she has been killed. In essence, Motoharu has "killed" her officially. Moreover, seeing him as an apparent detriment to his revenge, had an unconscious Kamijou Touma sealed into a box, and have him shipped into the School Garden, where males are not allowed to tread. Here, he sends Touma out in a wild goose chase to find a magician and a spiritual item, that is most likely fake.

He first visits the designer of the weapon that would have been used to kill his sister, Fugan Ryuuzou. He manhandles and handcuff Ryuuzou. He asks the reason but Motoharu says that he can answer it himself. He then sees the news of the burning of Maika's dormitory, and pleads to Motoharu that he only sold the designs and have done no wrong directly to him with his hands. With a cold smile, Motoharu says that he is lying and knows that Ryuuzou knows the people the weapon he designed for because he is meticulous in that manner. Ryuuzou demands proof but Motoharu lets him go, taking a toolbox from his truck and lining up a tools on the street. Motoharu threatens Ryuuzou with novel ways of torturing him and comes for his finger. Ryuuzou acquiesces to Motoharu's threats and says that he will talk, an advantageous event for Motoharu as he had no time to torture Ryuuzou. Motoharu tells him that he will kill him if they are seen and says that he should tell him everything quickly. Ryuuzou laments in getting caught in something that he should have not been and fears for his life agains them. Ryuuzu says to Motoharu that he wasn't able to track the people that commissioned him, saying that it was his first time in losing the trail to them. He states that the very fact that he lost their trail indicates that they are too dangerous to investigate. Seemingly satisfied with this, Motoharu lets Ryuuzou but takes away his business phone. Motoharu indicates that he is impressed by the fact that he hid the gold bars that he got from doing requests in designing weapons inside his tanker truck and labeled it as Diazinon Insecticide to deter Anti-Skill. However, after tossing it towards the still detained Ryuuzou, he discovers that Motoharu has contacted the hyenas of Academy City and divulged his secret towards them. Motoharu announces that he has 5 to 10 minutes left before they arrive, and that someone important may be mixed in with them that would lead him to a person that could give better information than Ryuuzou. Motoharu says that he will not kill him because it is more effective to have him struggle. He however recommends Ryuuzou to wait out the storm by hiding. He then proceeds to crush his right knee. In pain, the man screams as Motoharu curses him for though "he did not pull the trigger he made the gun" so to speak. Ryuuzou tells him that he cannot run away if he is handcuffed, but Motoharu says he doesn't care. Struggling around, Ryuuzou asks what Motoharu is trying to get to go this far, and he replies the Agitate Halation Project.

The hyenas later arrive, dismantle the trailer and separately carry the gold bars to a single location, so that a mediator can pick it up and have it laundered. Using a special perfume, Clairpharm #1056, Motoharu tracks the gold bars into an abandoned laundromat. He finds two guards and quickly dispatches, and there here meets the Spider Queen. She tries to draw out her firearm but stops as it would draw Anti-Skill into the laundromat. Spider Queen is angered on how Motoharu must've put a scent on it to track it. Motoharu taunts the Spider Queen about the perfume he used to mark the gold bars, and the Spider Queen acquiesces to an exchange. Motoharu asks about who would want to kill someone for a name like the Agitate Halation Project. The Spider Queen points out that he is overestimating him, though Motoharu doesn't buy it, stating that it her specialty in dealing with the people below her. The Spider Queen lies, stating that she can only wrap her "web" around those she deals with directly as an intermediary. Motoharu sees through her lie, and tells her that she needs information from people that aren't just her allies, blatantly stating that she knows more than she is willing to tell. The Spider Queen sighs at his discovery, and tells that she should just kill him and abandon the gold. Motoharu states that he knows that she may be killed if the information gets out, and suggests faking her death and getting cosmetic surgery as she has the funds for it. Frustrated, the Spider Queen tells Motoharu that she hasn't worked and allocated any personnel for anything related to the term Agitate Halation. Motoharu asks if she could've taken a job from it without being told the name, to which the Spider Queen says it is a possibility. However, she points out that she should have heard of the term at some point during the job. She tells of pawns using the internet to get dangerous jobs directly without use of intermediaries such as her. Motoharu asks if there is a way of knowing when that happens. She tells that there are a few pawns who have left her control in the middle of a another job, but that's the limit of her knowledge. She says that Motoharu is free to attack them but doubts he will find what he is looking for. Motoharu states that it's fine, stating that he would try them all and hopes of getting the right one while doing so. The Spider Queen then writes down the names on a corn starch paper using chocolate ink, stating that Motoharu could eat it to get rid of the information she has written.

With that, the Spider Queen asks what perfume Motoharu used, to which he states is Clairpharm #1056. Hearing that is was a cheap perfume that could easily disappear at 300 degrees, the Spider Queen throws a tantrum and fires her gun like crazy. Motoharu flips her off as one last mocking gesture and leaves, eating the memo. Tracking down the person's on the memos, Motoharu finds that a 10-man team was hired to kill Maika, but then discovers that all but one have died unnatural deaths. Starting from a mall in School District 15 and eventually on the rooftops of the district, Motoharu chases the last member of the team. Motoharu had to contend agains the man's Ultrasonic weapon, Motoharu manages to turn the tables on the man, and injuring him. Torturing him, he tells Motoharu his profession. He is a Destroyer, who is employed to kill his comrades. This confirms that the deaths of his teammates was not a cover up for the killing of his sister. Motoharu demands to know who behind all this is, to which he does not want to say for he fears them greater than the pain that Motoharu would undoubtedly do to him. As Motoharu tries to goad him through the use of a queer torture method, someone hits the man with the Sniper Bee. An assassin was sent to execute him, and Motoharu is forced into hiding. In excruciating pain, the man asks for reprieve, to which Motoharu is willing to help save his life in exchange for the information. The destroyer tells him of Yakumi Hisako, to which Motoharu gives him a bottle of toothpaste to use, the same one that he would use for his torture a while ago. Little did the man know that Motoharu was incapable of saving him, and gave him the toothpaste to consume as a means to give him a quick death. Pinned down by a sniper, Motoharu is forced to use his magic, and destroys the roof below him to escape. He is injured because of the backlash. Knowing that the sniper would report to the person running the Agitate Halation Project, Motoharu moves quickly towards School District 13.

Motoharu visits Yakumi Hisako in her hospital in School District 13, he takes the highly virulent Wildcard coccus from the Critical Pathogen Specimen Freezer from the hospital, and had manipulated Hisako into being alone. She falls right into his hands, and subdues her as she tries to evacuate the hospital. He tells her that she is not the one he is after but Kaizumi Tsugutoshi, apparently the one who is running Agitate Halation Project and the cause of his sister's "death". Being a member of the Board of Directors, he knows that they have ways of contacting each other. He demands her to hand it over as so to tell them that he will be coming over, and Hisako complies. Motoharu contacts them that he is coming, and leaves, taking with him the W. coccus for negotiation purposes, not intending to use it as it is too indiscriminate, though it is all for not as Motoharu passes by a tanning salon, probably deliberately, killing the bacteria. Little did he know that his true enemy was right before him and he let her slip away.

Seeing that he is coming, Kumokawa Seria has Kaizumi Tsugutoshi remove all normal guards, removing his hiding places. She also made sure that the only entrance that Motoharu can enter in is in the front door, where she will be expecting him. Although knowing that they are luring him in, Motoharu has no choice but to enter, there, he confronts Kumokawa Seria, the brains behind Kaizumi Tsugutoshi. Motoharu mocks her ineptness as he can simply shoot her from his position and she has no cover. But Seria reiterates her point and blankly states that she has total control over him. Motoharu asks if the Agitate Halation Project is important enough to warrant the "death" of his sister, to which Seria states that she has no obligation to answer him. Motoharu reminds her that he has the Wildcard coccus, but Seria states that Motoharu had no intention of releasing the bacteria in the first place as he didn't have the guts, as is the reason why she isn't wearing a mask and protective suit. Seria notes on how he didn't just scatter it beforehand and even had to contact them saying that he does so as proof of her knowledge, and she was right. Kumokawa Seria has profiled Motoharu before he arrived. Seria points out that Motoharu likes to thinks himself different from other people in the dark side of Academy City, a sense of professionalism that would not allow himself to involve people who are not part of the dark side, as such he will not used W. coccus. Hearing this, Motoharu asks her if he can read his pain, to which Seria says that it is cliched. Motoharu agrees, but warns her that she doesn't everything about him and that even if her data on him is accurate it is still faulty. Seria points out that what he's thinking is because she led him to hinking it. And with that, there is nothing left to discuss between them.

Kumokawa Seria has analyzed and read every move Tsuchimikado Motoharu has made as well as used her surroundings to influence his decisions. Using her mind, she took control of their "hearts" and made use of their fear to make them lose their true potential. Seria decides to walk leisurely according to rationalizations. Motoharu approached right in front of her, abandoning his weapons and opted for hand to hand combat. However, Motoharu was an open book, and she could read all of his moves, claiming that his status has dropped to the same level as an average high school girl. Suddenly, Motoharu's hand reached out and plucked out her eyeballs. However, despite this, Seria simply mocks at his attempts. With a smile, she revealed a hidden handgun inside her sleeve and shot at Motoharu's gut, making him collapse. Seria points out his flaw, she states that he was the type to slowly savor his revenge, but when he started to elimate her as quickly as possible, he should've realized that he was being led on by her. With the deed done, Seria tries to call Tsugutoshi on how it is over, and to prepare the parts she had put in Micro Cosmos as a replacement for her missing eye.

Just then however, she felt a strange pressure in her chest. She soon discovers that Motoharu is still alive and that he is using her eyeball for a spell. It is magic, something Seria has no knowledge about on Motoharu, the only missing part in her profile on him. Using her eye as a medium, Motoharu was able to put a curse on Seria and she collapses, a battle won out of simple lack of information. Motoharu can't celebrate just yet however as he still has to deal with Tsugutoshi. Believing that the normal paths towards him have traps, Motoharu, despite being injured from being shot and using magic, opts to climb from the outside the building to reach the 50th floor where Tsugutoshi's office lie. Tsugutoshi, awaits Motoharu, who bursts into the office behind him. Meeting each other's sights, Motoharu asks him if he is prepared, to which Tsugutoshi confirms. Motoharu states that his death will not be quick but protracted and painful, but Tsugotoshi states that he was prepared for such a thing the moment he sat on his chair. However, he warns him that he may not understand what's going on and that even though killing him will end his revenge, he will never reach satisfaction as he does not know the truth. Motoharu says that he doesn't care for the Agitate Halation Project anymore, and only revenge is in his mind on everyone who is behind it. Tsugotoshi asks that if that's true, then would his revenge not end when Motoharu dies. Tsugotoshi lays down his cards, he plainly states that it was Motoharu that has "killed" Maika after discovering a reprisal on his investigations were afoot. To protect her, Motoharu faked the death of his sister by using techniques of the dark side of Academy City. Tsugotoshi points out that his revenge is nothing by a farce. Motoharu states that the mere fact that someone targeting her life made him reach pass his boiling, as is the reason for his rampage. The old man does not understand why he didn't do his revenge behind the scenes, but Motoharu replies that is because he "killed" her. Despite saving her and the possibility of her life getting back to normal, he still betrayed her by breaking the rules he had set-up for himself, and used the ways of the dark side of Academy City. Tsuchimikado Motoharu has failed from saving Tsuchimikado Maika from getting involved in the dark side of Academy City. That is the reason why he has been going into a irrational rampage unbecoming of his cold demeanor when it comes to the dark side of Academy City.

Hearing his explanation, Tsugutoshi warns that the Agitate Halation Project runs much deeper than he thinks, and things will grow much worse. Motoharu accuses the old man of being behind the project himself. Tsugutoshi doesn't convice him any further knowing that he will not listen to what he will say, and says to Motoharu that he will understood soon enough. Having enough of his ramblings, Motoharu prepares for the man's torture, silencing him with a single blow, and tied his arms and legs to the chair with wire. Still conscious, Tsugutoshi tells him that he has not the time to a disbelieving Motoharu, who believes that he no longer has any pawns and allies. Tsugutoshi points out that it has nothing to do with whose side anyone is on. Motoharu mocks him for saying that a totally unrelated hero will show up. However, he still continues saying that a hero will surely come, and that he will now learn what he has been involved in. Just then, the elevator to the office has arrived.

Tsugutoshi states that he has no idea who will come for him, and that he or she may not be involved in the darkness at all. However, he tells him that he or she will surely be his enemy. Tsugutoshi then realizes that him being killed was not the call by for Motoharu and the person to defeat each other. It was set up that way since the beginning. Motoharu becomes confused, realizing that his clash with Seria and Tsugutoshi were nothing but a means to an end. Wanting some answers, Motoharu demands Tsugotoshi to tell him of his involvement with the Agitate Halation Project, to which he confirms to him that he is just like him, working to try and destroy the Agitate Halation Project. He says that his failure to stop it may be enough of a reason for him to being involved in Maika's "death". While Motoharu is confused, Tsugutoshi asks what Motoharu will do now, stating that if the both of them are defeated, no one will be able to stop the Agitate Halation Project. He suggests to him to flee, but Motoharu states that he has no choice, and that he will defeat the one who is behind those elevator doors as so he can continue his revenge. However, when the door opened, Motoharu's worst possible enemy has arrived, the possibility that he had feared the most, the arrival of Kamijou Touma.

Touma arrives and he is horrified by what he sees as it is so unlike the precise Tsuchimikado Motoharu. Touma tries to inquire what's happening due to his confusion, but receives no explanation. Seeing Touma, Tsugutoshi tells Motoharu not to fight as he could escape the predictions that the Agitate Halation has laid out for him, but he is knocked unconscious by him. Motoharu asks Touma how much he knows, to which he says that he knows nothing at all. Motoharu is troubled by Touma's answer as he has nothing to base his decisions on. He tells Touma that he must continue with his revenge and must not stop, and will not allow Touma to follow him down. He pulls his gun at Touma but discovers that he has used up all his bullets, something that was clumsy for him. With a sigh, he ignores Touma's words, and with his battered and weak body, engages in battle against Touma. And they fight, but Touma realized something strange with Motoharu's actions, he was being clumsy, and Touma, someone could never beat Motoharu in a fight, is able to dodge and block and counter him. The Tsuchimikado Motoharu that Kamijou Touma was fighting was nothing but a mere shadow of his former self. Touma beats and batters Motoharu, answering his fumbles with hits. Seeing the utter despair that has consumed the once bright spirit of Tscuchimikado Motoharu that could easily subdue Kamijou Touma, he yells at Motoharu what he was doing. Motoharu finally collapses to the ground, and Touma continues to beat him up, asking what he is doing, what he has become. Motoharu's last action is to spit blood on Touma, who easily blocked him, and there, falls unconscious. Touma, however, weeps for his friend, disgusted with the victory he had against him, and asks him questions that he cannot answer to him.

After Touma defeats Motoharu, he tries to call the ambulance, but Tsugutoshi stops him, saying that if he calls an ambulance for him, he will surely be killed. Tsugutoshi tells Touma that the one behind the Agitate Halation Project hoped to eliminate anyone who would interrupt the project by having them defeat each other, and they have been built into these plans. However, Tsugutoshi states that since they were alive means that the situation has already left their expectations, telling Touma that Motoharu will surely live. He points out to Touma that because of that, they have now have the opportunity to counterattack. Touma ponders on he is supposed to fight, and what led Motoharu to his current ends. Tsugutoshi tells Touma that if he truly considers himself as Tsuchimikado Motoharu's friend, then his top priority must be what he was trying to protect, Tsuchimikad Maika. He warns that all of Motoharu's actions were motivated to protect Maika, but warns that the ones behind the Agitate Halation project may have seen through Motoharu's ruse and may even reach Maika. He plainly tells Touma that someone needs to stop them. Touma believes that this is supposed to be Motoharu's job, but the old man's words convince him that he is out of the picture, though he does not take it kindly. Tsugutoshi asks what Touma will do. Touma gritted his teeth, and decides that he will protect Maika. He asks where she is, to which Tsugutoshi answers that she is not in her dorm, referencing on how Motoharu was thorough in hiding her. Hearing this, Touma is left no choice but to attack whoever was running the Agitate Halation project and stop them. He steals the documents on the project from Tsugutoshi and begins leaving. Tsugutoshi says that what matters to him is that Touma stops Agitate Halation, but advises to that he should save a life in the process. Touma says that he will but only her life, and states that the only one who can truly save Tsuchimikado Maika isn't him. Touma unties Tsugutoshi, but warns him that if he lets Motoharu die, he will become his enemy. Tsugutoshi presumably followed Touma's orders and had Motoharu treated.

After the events of the arc, and having her eye successfully replaced, Seria is sent to execute Motoharu for his actions. There on a bridge, he greets her if her eye is okay, to which she states that it has been eight hours, as such she doesn't feel strange in the eye anymore. With that done, Seria asks him if he is ready, and he confirms it. She takes a large handgun and fires paint rounds on him containing his blood. The force knocked him out into the river. And though, he is still alive, convincing the dark side is all it takes that would allow him not to be attacked again by them as they already have given the sign that they were convinced. It was the etiquette in the dark side of Academy City. Motoharu most likely survives his ordeal.

Toaru Majutsu no Index: Love Letter Competition

 * Main article:Toaru Majutsu no Index: Love Letter Competition

He first appears alongside Aogami Pierce as usual, seeing Kumokawa Seria's visit to their room, and discovering that she is looking for Kamijou Touma, who is absent on that day. She reveals a love letter to be given to Touma, and gives to Fukiyose Seiri, much to her annoyance, who curses Touma. Later, the side story features the only moment since volume 19 where both Motoharu and Maika are present in a single scene. Here, after Seria's letter strangely blows into their direction, Maika catches it, and recognizing it to be the letter earlier, requests his sister to give it to him, to which Maika refuses stating privacy and such. The letter later blows away, with Motoharu never finding out about its contents.

Toaru Majutsu no Index-tan
Motoharu appears alongside Aogami Pierce in the first episode as hosts in a shopping channel, where they present the Cleaning robot as a product. The sketch ends as Kaori slashes them for Aogami trying to force her to say the Nanasen pun over and over again.

In the 2nd episode, Motoharu alongside Aogami again, talks to a skeptical Touma about a scary rumor regarding a car that is moving without someone in the driver's seat, which is actually Tsukuyomi Komoe driving and humming a scary tune.

In the 3rd episode, Motoharu appears briefly and promptly leaves as Kaori obliterates the Knights of England arriving in Japan, several times.

Toaru Majutsu no Index (PSP game)

 * Main article:Toaru Majutsu no Index (PSP game)

Motoharu is a playable character in the game, being the only character of both the magic and science side. Predominantly a close-combat character, what sets him apart from Touma, is his ability to set up origami shikigami, which he uses for spells. His finisher is his Shikigami Pistol.

He has no route on his own, but appears on other routes. He appears in Touma's story mode, as first as antagonist during the Angel Fall Arc, as well as later as a partner during the Daihasei Festival Arc. In Accelerator's route, he is his partner, and later betrays him. Motoharu appears during Kaori's route as an antagonist, and is also confronted in Sasha Kreutzev's route. In Mugino Shizuri's route, is Touma's partner, and is killed alongside with him if Shizuri is victorious.

Abilities
His sorcery name is Fallere825, "The backstabbing blade" (背中刺す刃).

He was formerly a skilled onmyouji, as being of the Tsuchimikado family, famous in historical Japan as the dominating the arts for several centuries, but gave up his abilities when he went under the Power Development Curriculum. His esper ability is the Level 0 Auto Rebirth, which allows him to recover from life-threatening injuries over time. This allows him to somewhat bypass the penalty inflicted on non-magicians that try to use magic, making him the first successful esper-magician hybrid.

Onmyoudou abilities
Onmyodou Arts: He's very skilled in basic magic and onmyoudou, as he managed to erect a barrier during Angel Fall and destroy Touma's home using a spell. He was known as the best teacher of Feng shui and Onmyoudou in Necessarius and seems to be keen on spells that involve the 4 guardian deities: Genbu, Byakko, Seiryu and Suzaku.

The chant: "Establish the Altar. The paper snow will now remove the corruption on the eight-sided Altar (Ladies and gentlemen, behold a magic full of tricks and mysteries!)" "Designate the boundary. The 4 sides of the seal protected, treasures to be obtained from the 4 earths (Today's stage is over here! Let me begin with the cumbersome preparation!)" "The folded paper will be the basis of this spell that's to be supported by the spirits (And now, allow me to introduce my comrades of the magic brigade!)" "Commanding the four beasts. Black of the North, White of the West, Red of the South, Blue of the East! (Work faster, you idiots! Genbu, Byakko, Suzaku, Seiryuu!)" "Offering the Altar. Summoning the force to stabilize the Altar (The pistol is complete, now it's time to load the bullet!)" "At the early hours of 1-3, the wicked and wild witch with the nail will provide the motivation (This bullet shall be one so ridiculous powerful and violent!)" "Using this boundary to replace the scarecrow (A seal will be formed on the pistol!)" "Using thy God to replace the nail (A Shikigami will be cast on the bullet)" The chant: "C'mon, wake up you fuckers. Destroy some shit and laugh your asses off about it!!" "(The color black is the symbol of water. Open a path similar to that violence!!)" The chant: "Hey, wooden sticks. Be useful for once and be a shield!!" "(Use the talisman of the blue wood and protect my body!!)"
 * Red Spell (赤ノ式(あかのしき)): Also known as the Shikigami Pistol, using Shikigami representing the four guardian deities, and placing them in them in their proper place in the four directions, to create a ritual location, which would draw from the Power of the World. Motoharu chants a spell that would send a powerful long distance spell that turns the spellcaster as the gun for the power to be released. It is capable of destroying an entire house, and has a long preparation time.
 * Black Spell (黒ノ式(くろのしき)): A spell that uses the water with accordance with the principles of Feng shui. Referred by Motoharu as his favorite. Using a black origami sculpture, the spell makes a sphere of water a meter across appear out of nowhere and use it as a projectile-like attack.
 * Blue Spell: A spell that uses another origami sculpture. After chanting, a shield forms around Motoharu's body temporarily protecting him projectiles, and is strong enough to protect against anti-materiel bullets.
 * '''All-Around Reality Array (理派四陣(りはしじん)):Using a memento left behind by a spell caster, Motoharu forms a simple circle as magic array, and sets up colored paper that indicates the four colors representing the four deities: Black in the north, White in the West, Blue in the East, and Red in the South. A spellcaster is required to state a simple incantation to activate the spell, from there the paper will spiral into the center of the array, and will draw a map, using the color of the paper like a printer. Once the paper touches the memento, the papers will explode, and an accurate realtime adjustable map will be created. The spell takes about 15 minutes to set up, and encompasses 3 kilometers. It can be activated by a different caster to the one who set up the array.
 * '''Divination Circle Array (占術円陣(せんじゅつえんじん)): Forming a basic circle using a colored paper for a magic array. It is a spell that can react to the magic used by a spellcaster and relay information like distance and direction. It can be activated by a different caster to the one who set up the array.

Other Magic
The chant: ''"Hey, you pieces of shit. It’s time for a sickening job. (I humbly ask your assistance like the iron and the nail.)" "This is like an assembly line. Drive the bullet straight into that bitch’s heart!! (I have a sign to the hated enemy in my hand. Follow this flesh and blood to bind a curse to the owner!!)"''
 * Ushi no Koku Mairi: A reconstructed variant of the Ushi no Koku Mairi curse. By using objects such as hairs or fingernails, Motoharu can infect his opponent with a curse. Against Kumokawa Seria, he gouged out her eyeball to activate this spell. It is a popular infection magic spell that even children know and can used to attack remotely. It is noted that any decent magician would be able to put together a countermeasure as soon as they sensed the signs, but Motoharu used it against Seria who had no knowledge of magic. The curse causes the target's senses to dull and finally leads to them losing conciousness.

Esper ability

 * Level 0 Auto-Rebirth (肉体再生 (オートリバース) ): This ability applies a weak membrane over torn blood vessels to stop bleeding. Through this ability, he can still use magic, as he can repair the damage done to his body. Despite these advantages, he still avoids using magic except in the most desperate of situations as he cannot avoid the extreme pain caused when casting it, shown when he destroyed the spell location of Angel Fall, resulting in him falling to the ground in a large pool of his own blood that came from his eyes, nose, mouth, and several other parts of his body. He also mentions that his ability is not perfect (being a Level 0) and could at any time fail to revive him, causing him to die permanently. He then estimates that he can cast four or five more spells before that happens. The only time he's seen to be "dead" is when he's lying in his own blood after destroying Touma's house to prevent Angel Fall; the next time Motoharu is seen, all his injuries have vanished.

Other abilities

 * Hand-to-Hand Combat: Tsuchimikado is a very skilled hand-to-hand fighter. He easily defeats Touma—who is a rather experienced street fighter himself —without Touma even being able to land a single hit. Touma claims that the only way he could possibly beat Tsuchimikado in hand-to-hand was if it was two against one. Furthermore, Motoharu is not restrained in any rule of honor, allowing him to do dirty tricks and lowblows to an opponent without hesitation.
 * Deadly Thrust Killing Slash (死突殺断) is the fighting style used by Motoharu. It is formed from the illegal techniques of all sorts of martial arts. In top fighting form, even Kumokawa Seria's skill in deception would not be able to keep up against Motoharu.
 * Marksmanship:Motoharu is competent enough to use basic firearms. It makes up for his weakness in being unable to use magic in science-side missions, as well as the uselessness of his esper ability. His aim being so accurate that he was able to intentionally just avoid the vitals of Oyafune Monaka with a near miss to give it the appearance of a botched assassination attempt.

Design evolution
Not much has changed in Motoharu's design. According to Haimura, he followed through with illustrating Motoharu with long arms, though he states that it was "a bit creepy", as such he didn't represent that part of the description in the end of his character design.

By volume 12, Haimura's deformed style for the characters have become apparent, and Motoharu is not spared by this change, with characters having bigger heads, and smaller arms and legs.

Trivia

 * Tsuchimikado Motoharu is the only character officially referred to as both from the magic and science sides. An example of this is in the opening of the Toaru Majutsu no Index PSP game.

Quotes

 * (To Touma, from volume 4) "That’s right! It’s the most exciting summer festival activity! The peeping on Kanzaki nee-chin’s naked body contest!"
 * (To Touma, regarding Angel Fall, from volume 4) "There's no reason, no cause, no sense, no aim, no theory, no meaning, no value. Nothing. "Kami-yan, you should understand very clearly [...] It's just misfortune."
 * (To Touma, from volume 4) "Oh yeah, no need to worry about Kanzaki nee-chin. She's rather weak, but at least she can use that ridiculously long katana to peel an apple as recuperating exercise"
 * (To Touma, from volume 5): "Helping you with your homework, Kami-yan, is not going to make my love comedy dreams come true, so sorry."
 * (To Touma, from volume 7): "Hohoho! Say it, what’s your wish? Resting on Nee-chin’s legs? Let motherly Nee-chin clean your ear for you? Or do you want Nee-chin to make a bento that’s completely different from her character?"
 * (From Volume 13): "I don't care if I betray everything else, but I definitely won't betray Maika."
 * (To Kanzaki from Volume 16): "In the end, I see Nee-chin is that type of person... fleeing because she’s too embarrassed... have you no gratitude at all for Kami-yan?" [...] "Itsuwa wouldn’t mind though, would she? That's because the gratitude she has towards Kami-yan is stronger than yours. To tell you the truth, even with just the 'normal' fallen angel costume, Itsuwa’s attack level would rise quite a bit. And if she wears the improved 'erotic' fallen angel costume... do you know what this new gap would mean?" [...] "It means, Nee-chin, you have lost to Itsuwa as a woman".
 * (To Touma, from NT 7): “That’s the most troublesome answer. It gives me nothing to base my decision on. But from the look in your eyes, I take it you’ve at least heard of my sister’s death. I have to take revenge for that. Whether it was a coincidence or I was tricked, I’ve been running in the wrong direction, but what I must do has not changed. I will continue. And this is a path you can never follow me down, Kami-yan!!”
 * (To Touma, ibid): "Words are not needed here."