Yomikawa Aiho

* Anime
* Novel
* Manga
* Railgun
* Accel
* Imaginary Fest

### Epithet

*The woman who makes the serious comical* (あれはシリアスをコミカルに始末する女だ, **The woman who makes the serious comical**?)

## Personal Info

### Family

Accelerator *(Ward)*
Last Order *(Ward)*
Misaka Worst *(Ward)*

## Professional Status

### Occupation

P.E. Teacher *(A Certain High School)*
Anti-Skill Lieutenant

## Debuts

### Manga

Index Chapter 37
Railgun Chapter 1 (cameo)
Accelerator Chapter 1

### Anime

Index Episode 21
Railgun Episode 1
Accelerator Episode 1

### Video Game

Mobile MMO

**Yomikawa Aiho** (黄泉川 愛穂, *Yomikawa Aiho*?) is a character introduced in *Toaru Majutsu no Index*. She is a P.E. teacher at A Certain High School, and is good friends with fellow teacher, Tsukuyomi Komoe. Also a member of Anti-Skill, she cares for the well-being of children even if they are criminals, and absolutely believes that she will not use a weapon on children.

She is the current legal guardian of Accelerator, Last Order, and Misaka Worst.

## Appearance

She is a tall woman that has glamorous proportions, and is always seen with a green jersey, which hugs tightly on her large bust. Her long hair is tied into a ponytail, making her look careless, but also gives her an intriguing sexy feeling.

## Personality

She has a kind and caring nature, that extends to her job as Anti-Skill, and is most especially apparent with children, which she has promised to herself never to turn a weapon on them. However, her love more or less encompasses violence that an old generation P.E. teacher like her will execute.

She takes her job seriously, and often berates her junior, Tessou Tsuzuri if she doesn't do her job properly on patrols. Due to her habit of ramming delinquents with protective items like shield or helmets to resolve incidents, saying it's alright to do so since those are protective items, she's known as 'The woman who makes the serious comical'.

Out of the job, she is very cheerful, and enjoys beer, eatouts, and public baths with her friends, apparently, willing to go become pass-out drunk in public. She also enjoys teasing Tsukuyomi Komoe as if she was a child. She also believes that there is no shame in showing her naked body to teenagers like Accelerator since they are still children. This was shown when he walked in on her, Last Order and Yoshikawa Kikyou showering, they didn't feel embarrassed one bit and acted casual about it since they believed that he was still a child and that they were adults and it was okay. She also has a tendency of going on a cleaning spree when upset which ends up in making her do reckless things like losing her keys.

## Background

Not much known about her past, but it has been shown that she is good friends with Yoshikawa Kikyou, to the point that she can ask Aiho to take care of two children for her, as well as take her in. It is implied that Aiho has done something terrible for her to warrant not to use a weapon at a child even if they were espers, but it is unknown what had happened.

She took the test to join Anti-Skill at the same time as the Tokiwadai Dorm Supervisor, but both ended up failing to complete the test by beating up all the instructors. While Yomikawa managed to pass by apologizing, the dorm supervisor gave up on joining, both due to being disappointed in the instructors and because she thought herself more suited to protect a single place she lives in instead of the entire city.

At some point before the series began, Aiho and her team dismantled the Special Ability Institute, the place where Accelerator was in until he was nine. Yomikawa Aiho lives in Family Side and is a teacher in A Certain High School, where she teaches a class full of elites, which is just next door to Komoe's class.

## Chronology

### Toaru Majutsu no Index

#### Kazakiri Hyouka Arc

*Main article: Kazakiri Hyouka Arc*
She is first seen telling Touma to keep safe while he withdraws his money. She is later formally introduced as a teacher in A Certain High School, talking to Tsukuyomi Komoe about Kamijou Touma's secret meeting with outsiders (Index and Kazakiri Hyouka), and later asks Komoe to confirm if there were actually two outsiders. She later leaves as she receives a call to capture an intruder in Academy City, Sherry Cromwell.

She reappears doing battle with Sherry's golem, to which their meager weapons cannot hold a candle to it. They are later decimated by a grenade that accidentally exploded near them, though injured, they all survived. As she comes to, she discovers Touma approaching, and knows that he is one of Komoe's students, she and some of her group try to stop him, but she is too injured to do anything. In the original novel, the battle continues for longer, to the point where Hyouka appears wondering about Touma, as she is hit by a deflected bullet that utterly blows off half of her face. This event leads to her discovering that she is not human.

Later, after Touma discovers that he alone is not enough to beat the golem inside the School District 7 Underground Shopping Center and save Hyouka, she asks Aiho and the Anti-Skill help him save his friend. With that, they follow his plan. After Touma destroys the golem in order to save Hyouka. Sherry creates another one, at which point, Aiho protects Touma and Hyouka from any bullets and debris that might hit them. She orders her unit to fire at the golem in full force, to prevent Sherry from making any dangerous movements, lest she gets hits by the bullets. The battle draws out, Aiho asks Touma if he is going to continue with his plan, telling him that nobody will blame him if he chickens out. However, Touma is determined in going through with his plan. Aiho then orders the stopping in firing to allow to charge forward. Here, Aiho, though nervous of the great danger Touma puts himself through, and with some trouble, sees that he actually pulls through his plan. She once again tells her unit to fire, trapping Touma and Sherry behind the golem. Without anywhere to go, Touma successfully punches Sherry, stopping the golem. Sherry later gets away by going further underground with her magic.

Touma later demands Aiho to remove the barriers preventing their escape from the Underground Mall, as Sherry has turned her eyes Index, however, Aiho says that it is beyond their power. Touma is later taken into Anti-Skill custody during the end of the arc for all the trouble he caused them, which is assumed to be Aiho's group.

#### Tree Diagram Remnant Arc

*Main article: Tree Diagram Remnant Arc*
She is briefly seen guarding the bathroom that Accelerator and Last Order are using to bathing in, complaining about Kikyou giving her such a job, as she recuperates from her run-in with Amai Ao.

She and her unit is later tasked to attack the Science Association that is outside of Academy City, who has tasked Musujime Awaki to retrieve the Remnant of Tree Diagram. Awaki hears the battle ensue after overcoming Shirai Kuroko,and falls into despair after they are overwhelmed.

#### Daihasei Festival Arc

*Main article: Daihasei Festival Arc (Index)*
As a member of Anti-Skill, she is to keep the peace while the festivities go on.
She meets Touma and Index when she blocks their way from crossing the street. She tells them that they would have to take the long route in order to get across, much to Index's dismay.

She later accompanies Tsukuyomi Komoe during lunch time.

#### Academy City Invasion Arc

*Main article: Academy City Invasion Arc*
Before the start of the invasion, Aiho is first referenced by Kikyou to Accelerator and Last Order as the one who will be taking care of them from now on. Aiho is first seen talking to Komoe about her preference: alcohol or tobacco. Komoe, however, states that alcohol is prohibited during work, to which Aiho decides that they should smoke. After discussing the state of Academy City's economy, Aiho then invites Komoe to join her into meeting the new students of the school. Accelerator and Last Order later arrives at A Certain High School, to which he and Last Order are introduced to Komoe. Accelerator then expresses his shock at Komoe's petite figure, then assumes that she is part of an experiment that involves stopping cellular aging. Komoe protests at his idea of her as a guinea pig, and soon, Aiho invites them to her car to take them to her apartment. There, Accelerator wants to confirm if Aiho is determined to take them into custody, considering his contact with the dark side of Academy City. Aiho proudly tells him that her job will keep her safe at best. Accelerator continues to point out the risks of taking him in, but Aiho smiles and instead, pertains what he has been blurting out as his declaration that he will protect them, much to the Level 5's annoyance.

As they arrive at her aparment, Aiho reassures Accelerator of their safety from any potential attacks. Aiho later argues with Kikyou in regards with her habits, as they leave Accelerator and Last Order to their own devices. She, Kikyou, and Last Order, later take a bath together, and as they dry themselves, Accelerator enters, much to Last Order's surprise and embarrassment. Aiho and Kikyou takes this event cooly, apologizing for not locking as she has been living alone for so long, which Kikyou calls her an idiot and tells her to "cover them [her breasts] up". Last Order asks why they are not causing an uproar, to which Aiho says that it's because Accelerator is just a kid while they are adults. Aiho and Kikyou later punish Last Order for insinuating they were old women. After Accelerator realizes that Last Order is missing, and discovers that she went out despite the apparent danger of her going out, she and Yoshikawa prevent him from destroying her phone. Aiho later suggests that she will help Accelerator with searching for Last Order using Anti-Skill technology, as finding lost children is still part of her duty.

Accelerator manages to track down Last Order's last known location, thanks to Aiho's help. As they talk by phone, Aiho decides to ask Accelerator an important question: "Is showing goodwill to others really that scary?" Accelerator does not seem to understand what Aiho tries to point out at first, but soon, Aiho clarifies things; she thinks that Accelerator is still fearful of returning his goodwill he receives from Last Order. Aiho then recalls on his past, as part of the experiments of the Special Ability Holders Multiple Alteration Technologies Research Institute. He has accepted that fact that he was a monster since his days in the said facility, and because of this, he thinks that he is no longer able to show goodwill to people. Nonetheless, Aiho believes that Accelerator will have the potential of helping others through his powers. Accelerator momentarily thinks of what should have happened when he had used his ability to stop the experiment, but he does not have the courage to think aloud.

During Vento of the Front's invasion, Aiho begins to wonder why there are no cars in the streets. In her car, she receives a photograph of Vento of the Front, and requests details from headquarters but could not get any. After taking a look at the photograph of Vento of the Front, she collapses due to the effects of Vento of the Front's Divine Punishment. She is later found by Kikyou who is unsuccessful in waking her up. After Touma defeats Vento of the Front, Aiho was eventually freed from the "Divine Punishment's" curse.

#### Skill-Out Uprising

*Main article: Skill-Out Uprising*
In the aftermath of the invasion, she states that Accelerator "left her home", however unbeknownst to her, this was so because Accelerator was forced to join GROUP. She is first seen talking to Komoe about Nagatenjouki Academy trying to implement the Power Curriculum Program on a cat, and later talks about Komoe's runaway girls. Their conversation ends as Komoe hears a ruckus in her class.Her duties as an Anti-Skill have increased due to the need to increase security for the impending war. However, she also states that while they have increased security at Academy City's borders, this has also caused the Skill-Out to become more ambitious in their own goals.

During the Index II finale, she is seen having a conversation with Kikyou and Komoe, complaining that she was requested for additional work as a representative of Anti-Skill.

#### Document of Constantine Arc

*Main article: Document of Constantine Arc*
Aiho was forced to perform a power suit demonstration for investors, the Interceptor Show, in School District 3 at the start of the arc. Aiho noted how it was terribly uncomfortable to pilot a power suit while wearing an Anti-Skill bullet-proof armor vest to which the scientist monitoring the suit's operation answered that Yomikawa could have perfectly choose to pilot the suit wearing a bikini if she so desired. She later sees news on the recent anti-Academy City sentimets that are happening all around in Europe. She and the researcher later discuss the true nature of the of the exhibition, and shows anxiety regarding the recent events.

#### Battle Royale Arc

*Main article: Battle Royale Arc*
She is first seen conversing with Hamazura Shiage who was just about to break into a car, and becomes suspicious of him as he was near a particle engineering lab that was being demolished by ITEM during their fight with SCHOOL. Shiage later tricks Aiho that there is a baby trapped in the car he was about to steal, which made the car's alarm sound off as she tries to open it. As Shiage goes into the car with a hasty Mugino Shizuri and Takitsubo Rikou, Aiho yells out to him what the car he is driving all about, to which Shiage replies that he just got his license.

After the Shiage and Rikou's falling out with ITEM, Aiho meets up with them, where Shiage gives an unconscious Rikou to her. Shiage hastily explains that she has been using Ability Body Crystal, which is slowly killing her. At that moment, a bloodied Mugino appears before them, carrying the upper half of Frenda's corpse, whom she killed for her betrayal. Shiage pleads to Aiho to leave with Rikou as she has no way to take on Mugino, the 4th ranked Level 5. Aiho hesitates for a moment, but acquiesces and tells Shiage not to die, as she will bring a fully armed Anti-Skill team once she gets Rikou safe. After Shiage defeats Mugino, he later calls Aiho to inform her that the Anit-Skill is no longer needed.

She is reunited with Accelerator after she witnesses him defeating Kakine for the first time; she manages to convince Accelerator to let go of the gun and spare Kakine Teitoku, but she is stabbed by Dark Matter which infuriates Accelerator. Aiho's body is stepped on by Kakine with his Dark Matter, to make fun of Accelerator, which pushes him to the edge. Luckily, Aiho was able to survive, and tries to stop Accelerator after she comes to. However, she is stopped by Saigou Ryouta, who tells a great distortion is taking place with regards to the AIM Diffusion Fields. She breaks from Ryouta's grasp, only to discover several armored Anti-Skills and armored vehicles. Aiho demands them to put their guns down, and tells that it is their duty to protect Accelerator. Aiho tries to come close to Accelerator, though because she is injured, blood spurts from her mouth, and is restrained by Ryouta. Aiho later witnesses Last Order approaching Accelerator, however, Anti-Skill begins firing on him without permission. However, despite this, Last Order is able to stave off Accelerator's wrath, and he calms down.

#### Acqua of the Back Arc

*Main article: Acqua of the Back Arc*
She is in the faculty room as Komoe's class begins to starve due to lack of lunch. Here, as Touma pleads his case to open the culinary classroom, she is shown eating a large meat bun as the amount of calories that she burns is unrelated to the amount of rice that she intakes, and along with the lunch of her fellow teachers, has Touma leaving with in irritation.

#### British Royal Family Arc

*Main article: British Royal Family Arc*
Aiho is in a restaurant, among other large breasted girls, as Misaka Mikoto observes her during the height of the British Halloween in the United Kingdom, lamenting the fact that Aiho and the others have large breasts.

#### DRAGON Arc

*Main article: DRAGON Arc*
Accelerator broke into her apartment and took Last Order away with him and left her a note. Afterwards, Accelerator broke his only link to her as well as any other people in his life by destroying his phone. Here, she discovers a note from Accelerator, promising that he will definitely save Last Order.

### Shinyaku Toaru Majutsu no Index

#### Freshmen Arc

*Main article: Freshmen Arc*
When Accelerator came back from Russia, it was said that she punched him and then hugged him. She also tried to stop an argument between Last Order and Kikyou over a breast enlarging device, but somehow ended up getting involved herself.

#### Ichihanaran Festival Arc

*Main article: Ichihanaran Festival Arc*
During the last day of the preparations for the Ichihanaransai, Kikyou mentions that Aiho is out patrolling the streets. She is dispatched during the Red Code alert status in Academy City after Fräulein Kreutune escaped the Windowless Building due to the efforts of Touma and Thor.

She reappears a bit away from away from the Windowless Building after the hole on its wall has been covered. She is surprised that Kakita and Momozawa's teams have been taken out, and later tells her subordinates not to let their guard down with Fräulein has they have no idea what Fräulein could do.

During the festival, Yomikawa Aiho contacts fellow Anti-Skill colleagues, Sumomo, Hakutou, and Kurumi, regarding the strange information blackout regarding Fräulein. Aiho later plans on taking Kurumi, and tells both Sumomo and Hakutou to go back to the station to secure paper reports if possible, if not, then retrieve the temporary cache from the copier. Sumomo warns though, that whoever is blocking information is most likely a step ahead of them.

#### Agitate Halation Arc

*Main article: Agitate Halation Arc*
Yomikawa Aiho is called into School District 23 as her services are needed there despite her jurisdiction is only in School District 7, where she is to capture Dr. Matsusada alive after he tries to illegally leave the city due to the effects of the Agitate Halation Project. She partners up with Stephanie Gorgeouspalace who was just released prison. Aiho is mostly spends time on the sidelines as Stephanie barges in the room where Matsusada is hiding with her gatling guns outfitted on Security robots, and assuring her that she will not kill him.

After cornering him, Matsusada says that they do not understand what's going on, and accuses them of being affected by Agitate Halation already. He tries to tell them of his fearful situation, but he apparently used the hibernation drug cp-191 on his person, making lose consciousness. He is later take to ICU, while Aiho waits on him, she reads Matsusada's *The Future of Next-Generation Processors using Viscosity and Density*, though does not understand its implications. She later leaves knowing that Matsusada will not wake.

#### Magic God Invasion Arc

*Main article: Magic God Invasion Arc*
Aiho is with Kikyou in a subway station during the High Priest's rampage. Kikyou assumes that Aiho is going home but she tells her that she is trying to start up an investigation after her colleague Shiosai, got his P-Phone and handgun stolen by someone. Hearing Aiho getting pulled around by her job makes Kikyou consider getting a real job, though she says that she'll just keep volunteering for the meantime, much to Aiho's chagrin.

Akikawa Mie nearly runs into them during her flight to take the Liquid Diamond to her mother, much to their confusion.

#### Processor Suit Arc

*Main article: Processor Suit Arc*
She was present at District 7 Central Anti-Skill Station when it was attacked by A. O. Francisca and the Mimetic Predators. Injured during the attack, she was treated by Hamazura Shiage, who was wearing a Processor Suit. Recognizing that they couldn't contain the attacker, she told him where the baby Lilith was and gave him a key to the storeroom on the way to the nursery to buy him some time.

#### Choronzon Arc

*Main article: Choronzon Arc*
During the evacuation of Academy City on December 12th, Yomikawa assisted in coordinating evacuation.

## Abilities

As a member of Anti-Skill, she is trained in basic combat training, being able to take down thugs unarmed, as well as capable of using various firearms. She also knows how to operate Powered Suits. However, her greatest attribute is her ability to use "comedy-like methods to solve problems that could end up as a tragedy," using shields or other non-weapon objects to take down rampaging espers.

## Character Art Designs

### Design Evolution

Aiho's design has remained static throughout all her appearances in the series. Just like Sherry Cromwell, Haimura designed her differently than the standard moe character fare.

### Gallery

Character design by Haimura Kiyotaka for Volume 6.