Airi Otogawa

"*I know we have what it takes to put on the best show ever!*"

**Airi Otogawa** (乙(おと)川(がわ) 愛(あい)落(り), *Otagawa Airi*?) also known as **Mizutamari** (ミズタマリ,  *Mizutamari*?), is a student at U.A. High School, training to become a Pro Hero.

## Appearance

Airi has dark blue hair that falls a bit below her waist and the hair around the sides of her head is chopped short at ear length in a fringe, revealing fins behind her ears. Her eyes are diamond-shaped and turquoise with a lighter blue gradient and white ovoid pupils. Airi's molecular structure is close to water, and she glitters when sunlight hits her at certain angles because of it. Compared to her female classmates, she has a less curvy figure, but Airi has a graceful, slender body shape, further adapting her body to aquatic regions so she can swim faster even when not using her Quirk, according to her profile. However, it is revealed that she still has a rather muscular figure, possessing abs under her clothes. She is mainly seen with a determined expression.

During school hours, she wears the standard female uniform which consists of a gray blazer with blue-green stripes, a formal white shirt, red tie, blue-green pleated skirt, black knee-length socks, and brown loafers. However, her blazer is almost always seen unbuttoned.

Her first costume consisted of a black bikini and a piece of blue chiffon fabric around her waist. This was changed due to it barely passing the regulations to limit the amount of skin shown on a costume.

Her second Hero Costume consisted of a dark blue and off-white cropped top with white details that exposes part of her chest, detached flowing white sleeves, and blue shorts held together with a large white piece of fabric. She changed this becuase she felt this was rather uncomfortable.

Her current Hero Costume consists of a stretchable blue v-neckline sleeveless halter-top bodysuit with lighter stripes that does not cover the legs and exposes her hips. She wears flippers for footwear. Her bodysuit can shrink just enough so it can be stored in Airi's liquid form while she moves around. The fabric was suggested by Mei Hatsume.

During the winter months, Airi's costume has sleeves and covers her legs.

As a civilian, Airi wears a white tanktop and light brown cargo pants. She wears white basketball shoes and dons several pieces of jewellery.

During the Bakugo Rescue mission, Airi was disguised as a university student, with a poorly maintained brown wig on top to hide her fins. She wore a white baggy shirt and brown pants, her eyebrows were a lot thicker and she had prominent dark circles drawn on.

Later, it is revealed Airi has barely visible gills on the sides of her neck.

In formal wear, Airi wears what appears to be a short strapless dress with a black top, a skirt in shades of blue and turquoise, and gold accents. The dress has straps that cross at the back and meet in front along with a black bow, appearing as if it were a separate collar. She also wears loose black cloth with gold patterns and a turquoise gradient as sleeves and patterned turquoise straps around her wrists.

Prior to coming to U.A. High School, Airi wore the uniform for Sekirei Girls' Academy, which consisted of a navy sleeveless double breasted tunic dress over a white shirt and red tie, along with black thigh-length socks with white stripes and brown dress shoes. Her hair was only at shoulder length but covered her fins, and she was mostly seen with a tired/annoyed expression.

After the Beach Mission Arc, Airi gains a scar on her hand caused by her fight with Sunami Kaigara.

After the Paranormal Liberation War, Airi's hair is cut just above her collarbone and one of her fins have been badly damaged. She also has several burn scars on her arms from her tussle with Dabi.

## Personality

Airi is strong-minded and comes across as pushy to some. According to her mother, she is strict but reliable. She is very protective of her friends and family, and hates bullies. She was more tomboyish as a child, but now she thinks of that "era of her life" was embarrassing and refuses to speak about it. To this day, Airi still retains some of her headstrong attitude. She comes off as impolite and rude at times, but her pushiness comes from always worrying about her younger siblings losing control of their strong Quirks. She is also very competitive.

Airi leaves a strong impression on others and is hard to forget. Airi encourages those around her to be the best they can. However, she can still sometimes act comically aggressive towards Katsuki due to the rivalry that formed between them in the series, often taunting him or having "competitions".

Airi is also rather short-tempered and she is not afraid to speak her mind, which gets her into trouble frequently, earning her the title of "The Hero Course Department's Delinquent". She frequently butts heads with Katsuki Bakugo, although she is a bit more light-hearted and usually jokes around when she shouts.

Airi is also extremely determined, and Tamari Otogawa mentions that if she puts her mind to it, Airi can accomplish anything. Many of her classmates joke that Airi is an unstoppable force. She is feared by many students outside of the Hero course for her hot-headedness at times.

She seems to take things very seriously, even jokes, despite her own light-hearted nature. When someone insults her, she takes it personally and asks the person what they would like Airi to change, even when the person protests it wasn't serious. She stops when the person is on the verge of shouting at her, so many suspect this is just a way to get back at people who offend her.

Airi has no aversion to nudity or sexual things, and rather does not care when the boys of Class 1-A see her chest uncovered, usually after using her Quirk. When asked about it, she is rather confused and asks if something like that is something to be embarrassed about. She is a bit annoyed by Denki and Minoru's perverted behaviour and often punishes them for it by hitting them or dragging them away.

Before joining U.A., she would frequently think back on her past, bitter of how her friends viewed her as a freak, since Sekirei Girls' Academy's students were mostly Quirkless. When she would do this, she'd become snappy and irrational to those who would confront her about her attitude, insulting them, only to feel guilty afterwards.

Additionally, back then, Airi seemed to be quite judgemental. When she first met the Sekirei Girls' Academy students, she coldly evaluated each of them with a grade before interacting the one she considered the best. However, she realised the error of her ways and still feels guilt about it and has not forgiven herself for it. Due to this, she isolated herself in her third year before moving to U.A., hoping to start anew. Due to this, Airi has a belief that she is not good enough for anyone, and does not think that the students of Class 1-A truly care for her. This is changed when she sees her friends protect her in a moment of vulnerability. She truly does care for her classmates, but due to her experience in middle school, she held herself back from showing it.

## Abilities

**Overall Abilities:** Airi is one of the most powerful students of Class 1-A. She was also a recommended student, and came 3rd overall. She also came third in Shota Aizawa's Quirk Apprehension test, and third in the Sports Festival's First-Year stage. She recieved over 2,000 nominations and one was even from Edgeshot, the No. 4 Hero. However, she went on to intern under Storm, the No. 9 Hero. Airi's Quirk allows her to melt into water, making her a hero perfect for missions during rainy days/near the beach. She used her Quirk to its fullest potential by hiding in puddles and ambushing her opponents, making her a terrifying melee fighter. Several teachers at U.A. High School acknowledge her strength, and she was even a candidate for the Symbol of Peace because of her determined nature and body which could've stood against the sheer power of One For All with only a bit of training.

Airi was able to restrain Stain without getting cut or immobilised, and he acknowledged her strength. Her abilities garnered the attention of Mr. Compress during the Forest Training Camp Arc, and she was put in a capsule. She was extremely close to grabbing Katsuki's when she was released, but she missed. Tomura mentioned that Airi is the most unpredictable student out of the Hero Course at U.A., being able to hide in the water without anybody knowing, as well as being able to manipulate water and attack her opponents that way. Twice also mentions that she could be around, listening anywhere, making Spinner and himself anxious.

Airi's Quirk has been described as more flexible than Momo Yaoyorozu's Quirk, as it has several different things it can do. Several 2nd and 3rd years from various Hero schools were cautious of her and she fought on equal grounds with Yo Shindo, a third year student from Ketsubutsu Academy High School, and Sumire Kagaya, a second year student from Hashigoi Academy High School.

* **Enhanced Strength:** Airi has proved herself to be one of Class 1-A's physically strongest students. In a 4-koma, she is shown to have been able to beat Denki Kaminari, Hanta Sero and Fumikage Tokoyami in an arm wrestle without using Quirks, and even managed to hold against Katsuki for a full 12 minutes. She was able to restrain Katsuki to the ground when he was angered (though she was struggling). Airi is able to carry Denki Kaminari and Minoru Mineta on her shoulders with ease. Her physical strength was acknowledged by Dabi when she managed to land a punch and kick on him.
* **Enhanced Stamina:** Airi has an almost inhumane amount of stamina; she was able to withstand several attacks from Dabi but managed to continue fighting with determination. --WIP--
* **Enhanced Reflexes:** Airi has impressive reflexes, shown when she was able to sense that a villain at the training camp was about to attack her, and changed her trajectory a few seconds before she would've been actually attacked. She was able to evade high-speed flame attacks from Dabi while in a state of fear and annoyance and holding a conversation with Katsuki.

**Keen Intellect:** Airi came 3rd in the midterms, suggesting she is excellent at academics. However, her determination sometimes hinders her from viewing crucial factors and variables in a battle or mission, such as when she went to rescue Bakugo but ended up accidentally revealing her position.

* **Special Talents:** Airi is adept at playing keyboard and drums, and knows a few acoustic guitar chords & strumming patterns. However, she is tone-deaf when singing.
* **Culinary Skills:** Airi's family runs a restaurant, and she helps out often. Due to this, she is proficient at cooking and rivals Katsuki Bakugo's skills with ease. She is even able to cook without looking at the food or without measuring ingredients with accuracy. However, she has a hard time making aromatic spicy foods, especially mala.

### Quirk

**Mizu** (水(みず), *Mizu*?): Airi has the ability to melt into water, as well as manipulate it. Her cell composition's similarity to water allows her to melt into the water (as well as manipulate it). This ability enables Airi to remain camouflaged while swimming and ambush her opponents. Melting into water for too long will result in nausea or fatigue, and if she loses consciousness, Airi turns back into her physical form. She cannot produce water, and she can only manipulate a water source. However, she can multiply the amount of water available. To melt into water, she has to be hydrated, and when she is dehydrated, it is difficult for her to turn into water. Her Quirk gives her abnormal feature such as fins and gills, so she can detect water and breath underwater.

If she loses some water, she can turn back into her physical form using water from other sources, however, she cannot turn back using carbonated water or any non-water liquid. If she does, this will result in her feeling even more weak. Water left behind from her transformation can detect sounds and they will return to her when she needs it. The smaller the droplet, the harder it is to hear sounds. She can detect water and moisture using the fins behind her ears. She can also turn parts of her body into water and back again, however, she can only do this for a split second. Airi mentions that her weakness is very hot fire; showcased in her fight with Dabi during the Paranormal Liberation War. She can extinguish small fires, but very hot, large scale fires will end up forcing her to go back into her physical form; and if she does not, the next time she turns back into her physical form she will be covered in blisters and burns.

### Ultimate Moves

* **Cold-Hearted Rain** (冷酷(れいこくな)な雨(あめ), *Reikokuna Ame*?): Airi jumps out of a pool of cold water and splashes her opponent's chest, making them go into slight shock from the sudden cold.

* **Mizu Kick** (ミズキック, *Mizukikku*?): Airi turns her leg into water and does a turning kick, dousing her opponent with water and providing a distraction for her comrades.

* **Scalding Waterfall** (やけどの滝(たき), *Yakedo no Taki*?): A joint move with Shoto Todoroki; Shoto melts his ice to the point where it is boiling hot, and Airi uses it to shoot a blast of hot water at her opponent.

### Stats

Airi's stats, according to the creator.

Airi's stats, according to the Ultra Analysis Book
## Equipment

**Hero Costume:** Airi's costume is able to be shrunk when she is not wearing it, so she can store it around while she moves in the water and wear it again.

* **Water Vials:** Airi keeps vials of water around herself to combat her Quirk's uselessness in locations with a lack of water.

## Trivia

* Airi's name contains the kanji for "love" (愛(あい), *ai*?) and "fall" (落(り), *ri*?). Her last name contains the kanji for "second" (乙(おと), *oto*?) and "river" (川(がわ), *gawa*?).
* In the early stages of *My Hero Academia*, Airi's preliminary design was not so different from her current design, just having lighter hair. She was named **Mizuki Mizuhara** (水原(みずはら) 美(み)月(ずき), *Mizuhara Mizuki*?). However, Horikoshi found the name too weird and changed it to Airi Otogawa. When Airi Otogawa was made, he wanted to use the kanji for "sound" (音(おと), *oto*?) to relate to her originally sound-related Quirk, but he really loved the concept of a character able to melt into water, so he used the kanji for "second" (乙(おと), *oto*?) instead. Additionally, she was supposed to be a Pro Hero, but he thought that like Momo, an overpowered Quirk would suit an inexperienced person better.
	+ Despite this, Airi's personality is very mature for her age.
* Occasionally, Airi works out in the gym.
* Horikoshi says that Airi' Quirk was influenced heavily by Vaporeon from Pokemon's abilities.
* According to Airi's Volume 2 Profile:
	+ She likes swimming and beach volleyball.
	+ Her favourite drink is blue lemonade.
	+ Horikoshi thinks that in the future, she'd be an extremely popular Pro Hero.
* Her hair colour is natural.
* She has an aversion to spicy food.
* Airi shares her english voice actor with Melissa Shield.
* She shares her birthday with Ken Takagi.
* There is a running gag among fans that no matter what, Airi will come third in anything.
* She has a habit of pulling or fidgeting with her hair.
* She had a very short chuunibyou phase back in middle school.
* Airi, Shoto and Izuku share the same costume designer.
* Airi's known U.A. data is as follows:
	+ Student No. 3 in Class 1-A.
	+ Ranked 3rd in the U.A. Recommendation Entrance Exam.
	+ Ranked 3rd during the Quirk Apprehension Exam.
	+ Ranked 3rd in Class 1-A's midterm grades.
	+ Ranked 3rd in the U.A. Sports Festival First-Year Stage.
		- Airi recieved a total of 2,761 nominations from Pro Heroes for her U.A. Sports Festival performance, making her the 3rd most nominated Class 1-A student.
	+ Scored a 96 in the Provisional Hero License Exam.