Kamijou Touma/Personality and Relationships

Events in Toaru Majutsu no Index
Touma is the type that acts before he thinks. He can never just sit around upon seeing someone in a pinch and will go to great lengths to protect or help the person. This he does at great risk to himself, which typically results in him being hospitalized for several days after each confrontation. When fighting seriously against a particularly strong opponent, Touma would usually first declare that he'll "destroy that illusion" of theirs, before actually engaging. He once answered to Himegami Aisa's question about the reason why he saves people: "I don't need a reason to save someone". It is evident that even when he is in a blank slate after losing his memories, Touma can still display such personality. Although lacking his memories, Touma does not appear to mope over the loss of them in particular, as the beliefs from his pre-blank state continue to motivate Touma onwards, allowing him to understand what he needs to do, even if he doesn't remember. However, after losing his memories, now seems to approach people with more caution, carefully choosing what emotion or mood to display when meeting someone he thinks he might know, lest they see through his ruse and exploit him in any way. When Touma meets Stiyl once again after saving Index, he displayed politeness and casualness towards him which made Stiyl suspicious. Touma then realized his mistake quickly and created an explanation for his behavior. Touma also bears no grudge on former enemies, and is willing to help them if they asked for it.

Aiwass commented that Touma is only doing whatever he feels is right and is labeled "righteous" by other people impulsively as he compares the differences between him, Accelerator, and Shiage. . He is one who will follow what he believes regardless of what others try to convince him of. In addition, Villian commented that Touma is just like William Orville, someone who follows his own ideals no matter what, though there are differences between the two: William is someone who stays true to his ideals and firmly believes it is the right path no matter what happens, and no matter who speaks against it; while Touma does not have set ideals and therefore can be manipulated into helping other people's plots. And when he does do something wrong, Motoharu describes Touma as someone who will carry that mistake all on his own, along with his own. Even so, he works to correct his mistakes in order to bring a smile to everyone's face at the end of the road, no matter the cost he himself may have to pay.

Even though he is a well-mannered person, who is kind to people in general, Touma will not hesitate to strike female opponents who harm innocents or disrespect life, such as Sherry Cromwell, who was going to start a war between Science and Faith that would result in the death of millions, Agnese Sanctis, who was tasked to eliminate Orsola, Oriana Thomson, who hurt Fukiyose Seiri and Himegami Aisa, or Vento of the Front when she had planned to destroy Academy City and anything related to science to settle her grudge on what happened to her brother in the past.

Despite his righteous and heroic personality Touma occasionally displays poor choice of words which results in him getting bitten by Index, having bolts of lightning thrown by Misaka Mikoto, and creating misunderstandings with the other girls he encounters.

During World War III, after his first clash against Fiamma of the Right, when Touma questioned Fiamma's actions about how rightful they both are, Fiamma dared him to confront Index about his memory loss which left Touma saddened due to the guilt. During his fight with Accelerator, he regained his confidence but the guilt still stays on him.

If the the non-canon side-story A Certain Academy Index is to be trusted, Touma apparently has the time to read Weekly Shonen Manga. While talking to Kanzaki, he implies that he reads it because he wants to know what will happen next.

Events in Shinyaku Toaru Majutsu no Index
Touma returns to Academy City essentially the same, but has shown to be quite unfazed by threats to his life using supernatural powers, as what happened with Kuroyoru Umidori attacking him in his own bathroom.

However, after the events that transpire later, specifically after the events that lead to the creation of Science Guardian, and the distortion that occurred in Baggage City, Touma has started to stop trusting the people he meets, despising the fact that his actions, such as saving someone, are being manipulated into creating more suffering for others' ends. However, during his confrontation against Leivinia Birdway, Touma finally disregards his fears of failure, betrayal, or being manipulated.

Along with this, Leivinia sums up his personality of wanting himself to be put in danger of getting killed instead of other people, having him fight, getting himself hurt, as insanity. Indeed, even the Will of the Whole Misaka Network would later question on his "unconditional need to place himself below everyone else". Despite Leivinia being a person who investigates leaders and charismatic leaders, she cannot understand what drives Touma, whom promptly tells her that he has no reason to abandon people who needs saving in the first place, a clear reference to his "I don't need a reason to save someone" mentality. Moreover, Aiwass' comments on Touma labeled "righteous" by other people is referenced. Leivinia compares him to Aleister Crowley and Laura Stuart, and refers to him as having the seeds to do something indescribably great, which will give him great power if he controls it, or will be disastrous for him if he does not.

In the Agitate Halation Arc, Touma was willing to defeat Rensa knowing full well that he might kill Yakumi Hisako who has turned into an AIM thought being and had entered Rensa's body with his right hand in order to save her. However, it should be noted that it might be because maybe Touma was confident that Rensa would be able to save Hisako before he could destroy her. Indeed, Hisako survived and was spared from being completely destroyed by the Imagine Breaker after Touma defeated her due to Rensa's actions.

Later, after finally falling into the nadir of despair in the Omega World, a world where everyone has been saved perfectly like all the Sisters, and attempting to commit suicide, Touma finally does something for his own convenience after some convincing from the Will of the Whole Misaka Network. Here, he accepts that he wants to go back to his own world where his actions had meaning instead of being in the perfect world, and was willing for it to be unmade. Despite this, during his fight with Othinus, the creator of that world, there was still some hesitation in his heart, as he too wanted to protect that perfect world. These hesitations were later thrown to the caution of the wind in his battle with Othinus, and after he lost to her didn't bother him much as he concedes victory and the world to her.

Other traits
As the result of his Imagine Breaker negating his own luck, Touma is unfortunate and often bemoans his situation when confronting an unfortunate situation with his famous catchphrase: "Such misfortune!" (不幸だ!, Fukou da!). However, regardless of his own misfortune Touma believes that he is not regretful for being unfortunate, and states that he rather be unfortunate and help people than be fortunate and be happy and not notice people who are suffering. He states that being unfortunate is his fortune and it would be the path that he continues to walk on. This has somehow fallen out of use in New Testament.

In conjunction to the above, Touma is often self-deprecating with his fortunes. He had once asked himself on why "the sky is so blue, but [his] future is pitch black". This also includes his luck women. When Misaka 10032 put his hand to her chest to his measure life signs, he was incredulous to the situation. Moreover, he is also quite aware that making a move on the powerful women who comes on to him would be dangerous. Of his own person, the Will of the Whole Misaka Network surmise a part of his personality of "unconditionally place himself below everyone else". Indeed, he downplays his own achievements. In his second battle with Accelerator, he downplays himself in order to deter Accelerator from his obsession of heroes and villains, referring to himself as a mere Level 0. This is taken to ludicrous extremes when he fights Magic God Othinus and proclaims that he would normally lose to "normal magicians" despite the achievements he has gathered up to that point.

A second catchphrase he often says in fights is: "I will destroy that illusion of yours!" When he says this, it usually indicates he will win the fight he is currently engaged in. Along with the "Such misfortune" line, this too has fallen out of use by him in New Testament.

Ironically, despite Touma having several girls attracted to him, he has shown no apparent romantic attraction to them. However, Touma stated that he specifically prefers Dorm manager Onee-san (elder sister) types, as is the case with Kanzaki Kaori when he dreamed of things like her wearing the swimsuit used by Index during the Angel Fall incident, and asking a kiss from Oriana Thomson when they first meet. He also has shown awareness of the opposite gender when involved with them, such as Oriana Thompson and the several times he accidentally ends up in embarrassing situations, such as Daihaisesai being able to perfectly describe a kiss in a fraction of second. Despite this, Motoharu describes Touma as someone who has strong self-control, and in the case with Index, who often sleeps with him, will not attack girls that are asleep. Despite this, the narration states that Touma is not a pure Saint in regards to his attraction with the opposite sex.

Because of his personality, former antagonists on his side of the series such as Stiyl Magnus, Accelerator, Agnese Sanctis, Vento of the Front, Hamazura Shiage, and Lessar became his allies.

Relationships
Touma meets his allies and friends unexpectedly, and they help each other in many situations. Their connection with Touma were formed due to many reasons

Index
Touma views Index as a person that he has to protect at all costs. Even after knowing her only for a very short time he decides to hide his memory loss from her to protect her feelings as he was captivated by her 'perfect smile'. Index lives with him and is a constant drain on his resources because of her enormous appetite. It is unknown if Touma feels anything towards Index as far as romantic, but he does in fact care deeply about her. Several of his actions in the story is due to his caring for her well-being, to the point that even Stiyl used this to his advantage in order to coerce Touma in aiding his mission, as well as fool both magic and science sides.

It is also pointed out that both before and after losing his memories Touma is afraid of losing any connection with her and that she may leave his side one day.

Misaka Mikoto
Touma met Misaka when she was being harassed by delinquents and, unaware of her Level Five nature, tried to save her, only to accidentally make her angry which led to her frying all of the delinquents herself. He quickly learns from his mistake, and in the first scene in the Index series he tries to save some other delinquents from her. Touma seems to be wary of Misaka in most of their interactions because of her tendency to shock him whenever he annoys her. However, he genuinely cares for her as shown during the Sister's Arc, when he stopped her from trying to get herself killed, as well as consoled her when she cried. Misaka was the first person to discover Touma's memory loss albeit by accident. Touma has yet to realize Mikoto's romantic interest in him, and it is currently unknown if he feels anything for her.

Tsuchimikado Motoharu
Tsuchimikado is a friend of Touma and make up with Touma and Aogami Pierce the "idiot trio" of their class (クラスの三バカ lit "the three idiots of the class", also known as デルタフォース or delta force). . He is also his neighbor. He is superior to Kamijou in fighting and Kamijou respects him for that. Likewise, Tsuchimikado respect Kamijou as good person and even told Kaori she can trust him.

As a spy from the Anglican Church (and others), he drags Kamijou under orders from the church to different missions like the English Civil War. Even if Kamijou does not want to go, Tsuchimikado uses some extreme ways to carry out the order. For example in the aforementioned arc he calls 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 the previous excursions; Motoharu simply throws a canister of knockout gas into his apartment and leaves them both stranded at the airport with no choice but forward.

Tsukuyomi Komoe
Tsukuyomi Komoe is Touma's homeroom teacher in a certain highschool. She describes him as a naughty boy when he enrolled and says that "a lot of things have happened". She also states later on that she likes him, though she tries to take it back and states that she likes teaching him. .

Touma thinks of her as a person who he can rely on, like when he brings an injured Index to her dorm and consults her in order to find a solution for Index memory capability (having 103,000 grimoires stored inside allegedly taking up most of the space) other than erasing the last year of her life to make room.

Leivinia Birdway
Touma first met Leivinia when he ran away from some members of the Dawn Colored Sunlight. During that time he thought that she was an innocent person who he had dragged in all this and took her with him, only to find out that she was the leader of this magic cabal. Later, he will be involved in a magic-related incident and Birdway explained that she's here to seek assistance from Index and Touma. There he finds through Mark Space out that she is a person who would sacrifice her own man in order to succeed her plan.

In New Testament, she rescued him from the Arctic Ocean. He thought of her as someone cocky, but he still thought of her as someone he can rely on while she sees him as someone who is pretty tough and fun to play with. However, after a certain incident, he didn't trust her anymore and subsequently began to doubt trusting others so easily. Later on after their "fight and makeup" during Ichihanaransai, he began to trust her again and acknowledged her as one of the most passionate and hardworking of people.

Othinus
The relationship between Othinus and Touma started as mutual enemies, with Touma seeing Othinus as one of the most dangerous foes he has ever faced. As the leader of Gremlin, one can also state Othinus caused the Hawaii incident and the Baggage City incident, both of which greatly affected Touma. For most of the Gremlin Saga however the two of them rarely met, their first encounter also ended with Othinus cruelly crushing Touma's arm and trying to kill him without a second of hesitation. While she acknowledges Imagine Breaker as a danger, Othinus thinks that Touma himself is nothing but a human who doesn´t know his place in the world and goes do far as to break his will through countless cruel worlds she creates to show him how pitiful he is.

After some time Othinus comes to realize that Touma has in fact become the only person capable of understanding her, as a result of going through the many worlds she created and searching for the one he belongs. These feelings cause her to abandon the goal of creating a new world or returning to her own with Imagine Breaker in order to return to Touma's world so that she can save him. As a result of this, Touma comes to realize that the thing Othinus was ultimately looking for was understanding, which she originally hoped to find in her world but abandoned that upon realising she'd found someone who could in him. Realising that she had resolved to die as the villain of the world in exchange for that brief respite, Touma decided to protect Othinus against the Allied Forces, saying he will face the entire world to save her.

Touma is willing to cry for her and remarks that she has a sweet aroma.