Toaru Majutsu no Index Wiki

Kouyagi (香焼 Kōyagi?) is a character introduced in Toaru Majutsu no Index. He is a young member of the Amakusa-Style Remix of Church.


He is likely named after the town of Kouyagi, which has been merged with other towns from the Nishisonogi District into the expanded city of Nagasaki.


He is a boy with brown hair. In his cameo appearance in the Toaru Majutsu no Index anime, he wears a colored sleeveless shirt over his white one. He also wears shorts.[1] However, in his appearance in the novels and in the Toaru Majutsu no Index Manga he wears the same outfit, a red jacket over his shirt. He is described as short.[2]


Not much separates him from his comrades. In spite of his age however, he shares the perverted tendencies of the male Amakasu Christians. In his speech he abbreviates the copula "desu" to "su".


Toaru Majutsu no Index

Orsola Aquinas Rescue Arc

Main article: Orsola Aquinas Rescue Arc

He is present in the battle against the Agnese Forces both in the manga and anime adaptations of the 7th Toaru Majutsu no Index light novel.

In the anime adaptation, it was only a brief cameo of him fighting off the Agnese Forces as Kamijou Touma and Orsola Aquinas try to escape the building they were in. He reappears again in the same episode, fighting off multiple nuns on the roof.[1] In the manga adaptation, he has a much bigger role, he and the other Amakusa Christians use wires to restrain the members of the Agnese Forces before they overwhelmed by their sheer numbers.[3] He and the other Amakusa Christians later follow the plan concoted by Stiyl Magnus, Tatemiya Saiji, and Kamijou Touma, act as decoys while they distribute Stiyl's rune cards to create a large magic circle and the pretend to be defeated by the Agnese Forces.[4]

Acqua of the Back Arc

Main article: Acqua of the Back Arc

Kouyagi is one of the named Amakusa Christians in the novel. In the story arc, the Amakusa Christians are sent out by the Anglican Church to protect Touma from Acqua of the Back.

Isahaya, Kouyagi, and Tsushima witnesses Saiji telling Itsuwa to stand up to her despair and repay Touma.

There are a few notable scenes with him. He is first seen when he and the rest Amakusa Christians spy on Itsuwa and Touma from behind a nearby building. He and the rest of the males there gather around Saiji as he describes Itsuwa's greatest weapon to getting Touma which has yet to use, her breasts, and he faints as the conclusion. He immediately comes to afterwards, though instead of continuing arguing about Itsuwa's breasts like Ushibuka, Kouyagi instead references on how slow Itsuwa's progress is. Here, Saiji proceeds to show them his countermeasure.[5] He later witnesses Saiji taking out a soccer ball and kicking it towards Touma's head in order for his face to land on Itsuwa's breast. He is successful, but he manages to catch the attention of Misaka Mikoto, irate on what had happened to Touma. Saiji and the other later leave quickly without a trace.[6]

Kouyagi is likely later present during Acqua of the Back's first appearing before them and defeating them all. He is present in a School District 22 hospital after their and Touma's defeat at the hands of Acqua of the Back. He is present in the illustration with Tsushima next to him when Saiji forces Itsuwa, who was depressed after failing to protect Touma from Acqua of the Back, to stand up to her despair and repay Touma after protecting her from being attacked by Acqua of the Back.

They later have the 50-strong Amakusa Christians in an alleyway in School District 22, awaiting the intelligence from the Anglican Church regarding Acqua of the Back. Saiji reports to his comrades that Acqua of the Back is currently fighting unmanned robots, and that they should prepare first before challenging him. As the Amakusa prepares for their battle against Acqua of the Back, Saiji turns to find Itsuwa, finding out that she is intensively strengthening her weapon beyond normal. In the illustration, Kouyagi is present while Saiji is talking to Orsola on how he may have gone overboard with motivating Itsuwa.[7] Orsola Aquinas later informs him of what they learned of Acqua of the Back, and though they learn no weakness and discover that Acqua of the Back is more powerful than they thought, Saiji and the others are still determined to protect Touma from him.[8]

Once was broken, is again now whole.

He and the other Amakusa Christians partake in the battle against Acqua of the Back. As the fight goes on, and while Itsuwa fights Acqua of the Back directly, other members attack him in every direction, however, they are still no match for his impeccable power, blowing them away, specifically both Ushibuka and Kouyagi. The both them likely continued to participate in the battle and later probably witnesses Itsuwa using Saint Destroyer on Acqua of the Back and its failure against him.[9]

Kouyagi and the other Amakusa Christians later rally to Kanzaki Kaori's sides after she asks for her help in defeating Acqua of the Back.

British Royal Family Arc

Main article: British Royal Family Arc

Kouyagi first appears during Itsuwa's bout of depression after the mix-up in the airport where instead of receiving Touma and Index, she instead receives Sphynx instead. Here, he and Tsushima are shown to be shocked at Itsuwa's predicament. He is likely present when, after Isahaya says that the spiky-haired boy is coming, the spiky-haired Saiji appears and is promptly propelled by Itsuwa into the air after flipping the table in a bout alcohol-fueled rage.[10]

He and the others likely continue to participate in the missions that were given to the Amakusa Christians of the British Halloween.

English Civil War
Main article: English Civil War

Kouyagi and the other Amakusa Christians appears right after Touma, Index, and Princess Villian's successful Overloading of the Curtana Original mission. It was a calm before the storm, and the members of the Anglican Church, including the Amakusa Christians and the Agnese Forces, have gathered in the verdant outskirts of London. Saiji mentions that they succeeded in weakening Curtana Original but they were still affected by its reaction. Ushibuka then states that it is because of the telesma emitted in all directions with the second princess at the center, affecting the spiritual items and facilities within London, and destroying three small churches in the process. Kouyagi adds that the Telesma in London is incredibly dense, so much so that using magic within London would envelop the city in an explosion. Saiji agrees, stating that they could mentally take down the knights now that Carissa has been weakened further. Isahaya comments that they need to wait for the Telesma in London to diffuse before they could attack, though he worries that the Curtana Original might be restored and the Knights of England would focus on defending Buckingham Palace in the meantime. Saiji states that though he is unsure of the knights, the Curtana Original is too strong and cannot be restored easily without leading into catastrophe if it fails. With that, Saiji concludes that they have a little break, though states that it is also a preparatory period before the final battle. Tsushima retorts that they should do their jobs properly then, to which Saiji and other males of the Amakusa begin arguing back against her. However, Tsushima is unperturbed as she sees them looking at Itsuwa and her apron using the binoculars.[11]

During the calm before the storm, the Amakusa and the rest eat to restore the stamina they lost from the fleeing and battling. While Itsuwa is flustered on what she should do with getting close to Touma, Saiji appears having apparently gotten the Great Spirit Revealing Maid outfit. Saiji reveals that the designer was from London, as such he picked one up just after the coup d'état started, to which Itsuwa just freaks out. Seeing this, Kanzaki lets out a sigh of relief, believing that her own maid outfit was lost back in the ensuing chaos of evacuating the Necessarius Women's Dormitory. But Saiji reveals that he also picked up both the Fallen Angel Maid and the Fallen Angel Ero Maid from the dormitory, much to Kanzaki's befuddlement. The Amakusa men (and Kouyagi) then started talking about Kanzaki having other more erotic maid outfits, infuriating her even more. This was apparently because they have never seen their Priestess in a Fallen Angel Ero Maid outfit. All the discussion about maid outfits reached the ears of the Agnese Forces and even Sherry Cromwell and Orsola Aquinas.[11]

Kouyagi and the other Amakusa Christians are present during the Battle of Buckingham Palace. When the Griffin Sky arrives to aid Carissa, Kanzaki orders the Amakusa Christians to split into teams to deal with Carissa and the Griffin Sky mobile fortress. Kanzaki orders the Amakusa Christians to split into teams to deal with Carissa and the Griffin Sky mobile fortress. Ushibuka, Kouyagi, and Nomozaki were the one who were ordered to do so, but doubts if they can get through against the Griffin Skies as they have giant shields. Regardless, the Amakusa Christians quickly do as their told, and though one of which was not taken down, Kanzaki was able to use it to her advantage. Swinging the lance it had to hit the other Griffin Sky mobile fortresses and attack Carissa. Kanzaki later encourages them to make teams in order to increase their attacks on the Griffin Skies, to which the Amakusa Christians do so quickly.[12]

After the battle, Kouyagi, as part of the Amakusa Christians likely later treat the wounded after the end of the coup d'état. He and the others may have also gathered around Index after Fiamma of the Right took away the external controller for her John's Pen Mode, as well as Touma declaring to hunt down Fiamma of the Right.[13]

World War III Arc

Main article: World War III Arc

As a member of the Amakusa Christians, he was likely deployed during the Battle of Dover Strait against the French forces.

Shinyaku Toaru Majutsu no Index

Homecoming Arc

Main article: Homecoming Arc

Kouyagi was among the crowd that gathered to watch Tatemiya Saiji attempt a sword catching technique with Itsuwa. After several failures and the suggestion that the bamboo blade might be throwing Itsuwa's timing off, Kouyagi offered her a metal imitation sword to try using, to Saiji's dismay.[14]

Other Appearances


Toaru Majutsu no Index SS: Necessarius Special Admission Test

Main article: Toaru Majutsu no Index SS: Necessarius Special Admission Test

Kouyagi like most Amakusa Christians play a supporting role to Itsuwa, as they struggle to clear their name after being framed by the Dusk Waiting to Awaken magic cabal. In spite of this, and the other male members of the Amakusa Christians still have time to argue amongst themselves regarding Itsuwa.


Main article: Amakusa-Style Remix of Church#Abilities

Like most of the Amakusa Christians, Kouyagi is trained in the style of combat and magic inherited from generations of secrecy, and is particularly effective working in a team. Like most of the Amakusa Christians, he uses a Western weapon. His weapon of choice are a pair of daggers. He is very effective at wielding them.

His fighting style seems to be centered in parrying incoming attacks and then using his agility to catch the enemy before they can recover their fighting stance. His acrobatic prowess allows him to use quick jumping kicks and difficult evasive maneuvers.[1]

Character Art Designs




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Amakusa-Style Remix of Church
Japanese Amakusa Christians
Kanzaki Kaori (Index III).png Tatemiya Saiji.PNG
Kanzaki Kaori Tatemiya Saiji
Itsuwa profile.jpg Uragami profile.jpg Ushibuka (Anime).png Kouyagi (Anime).PNG
Itsuwa Uragami Ushibuka Kouyagi
Isahaya (Anime).PNG Nomozaki (Anime).PNG Tsushima (Anime).png
Isahaya Nomozaki Tsushima
Overseas Amakusa Christians
Cynthia Exment.jpg
Cynthia Exment
v  e
Archbishop and Head of Necessarius
Dion Fortune.png
Dion Fortune
Main Members
Indexlibrorumprohibitorum.png Stiylmagnus.jpg Motoprofile.png Sherry.jpg Index3026.jpg
Index Librorum Prohibitorum Stiyl Magnus Tsuchimikado Motoharu Sherry Cromwell Orsola Aquinas
Template Placeholder other.png Template Placeholder other.png Template Placeholder other.png

Freadia Strikers.png

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Theodosia Electra Tsuchimikado Touzu Tsuchimikado Bishu Freadia Strikers Torquay Shadowmint
MarieSpearhead profile.jpg MallybathBlackball profile.jpg JaneElves profile.jpg Ellasone profile.jpg MissTourGuide profile.jpg
Marie Spearhead Mallybath Blackball Jane Elves Ellasone Tour Guide Girl
Urea.jpg Sotzy.jpg Template Placeholder other.png Template Placeholder other.png Template Placeholder other.png
Ureapaddy Exica Sozty Exica Víðarr Shoes Woman Nics Everblind Ange Catacombs
Template Placeholder other.png Isabella Theism.jpg Jeans Shop Owner Novel.jpg
Cutia Virginroad Isabella Theism Jeans Shop Owner[U]
Roman Catholic Church London Branch
Agnese profile.png Angelene profile.jpg Lucia profile.jpg Agata profile.jpg Caterina Manga.jpg
Agnese Sanctis Angelene Lucia Agata Caterina
Amakusa-Style Remix of Church
Kanzaki Kaori (Index III).png Tatemiya Saiji.PNG Itsuwa profile.jpg Uragami profile.jpg Ushibuka (Anime).png
Kanzaki Kaori Tatemiya Saiji Itsuwa Uragami Ushibuka
Kouyagi.jpg Isahaya (Anime).PNG Nomozaki (Anime).PNG Tsushima (Anime).png
Kouyagi Isahaya Nomozaki Tsushima
Former Members
Laura Stuart.jpg Template Placeholder other.png
Laura Stuart[D][F] Richard Brave[D]
Aqua Tunnel Necessarius Underground Labyrinth Necessarius Women's Dormitory St. George's Cathedral Sword Sanctuary