Aoi Asahina

At the beginning of the Killing School Life in Danganronpa: Trigger Happy Havoc, Aoi appears to be young high school-aged teenager, but, due to the memory loss, she is two years older than she believed, closer to her late teens or early 20s.

Aoi is (160 cm) 5'3", making her the shortest female in Danganronpa: Trigger Happy Havoc and weighs around 50kg with a lean but curvaceous build. She has brown skin, blue eyes, and wears her brown hair in a very high curled ponytail accessorized with a paperclip-style barrette. She wears Hope's Peak Academy-branded blue dolphin hotpants and green sneakers, a white tank top, and a red tracksuit jacket with white piping and her previous high school's logo on the chest. She wears knee-length white socks, a red knee brace over her right knee, and a band-aid on her left knee. While swimming, she wears a typical high school girl blue swimsuit with her last name in kanji on the front.

After leaving Hope's Peak Academy and joining the Future Foundation, Aoi wears a modified version of the Foundation's standard female business suit uniform, wearing a green tie and shorts instead of a skirt. Under her suit jacket and dress shirt, she wears a white tank top. She still wears her hair in a ponytail, but it is considerably longer, indicating her hair has grown over the years.

Aoi is a warm, cheerful, upbeat, and outgoing girl who is friendly and welcoming towards everyone she meets, trying to make friends with everybody and include them in her activities. Aoi can be quite air-headed and forgetful, relying on the memory trick of writing people's names three times on her hand in order to remember them - a trick she also taught to her brother, Yuta. Due to being quite air-headed, she can be easily manipulated by others and jump to conclusions or take them at face value, often being one of the few to fall for killers' tricks and misdirection during Class Trials. Aoi is an extremely athletic person and considers it an absolutely fundamental part of herself, using it as an important coping mechanism in her daily life and feeling like she "might die" if she can't exercise. Although Aoi is a star athlete in the running to become an Olympic swimmer, Aoi is insecure that being athletic, which is seen as quite a masculine activity, makes her undesirable to others and might lead to her never finding love. She's also concerned that her extreme sweet tooth, particularly her love of eating donuts, is going to make her fat.

Her positive attitude is truly challenged by the events of the Killing Game, and it fundamentally changes her outlook on the world and her relationships. She is extremely loyal to her friends to such a degree that, when they are harmed, it shatters her ability to emotionally cope. She very nearly falls into despair during the events of the Killing School Life, as the emotional snowball of the continuous deaths compounded her sadness exponentially, crying alone in her room in the evenings and frequently comfort eating. This came to a breaking point after the death of Sakura Ogami, where she felt so hopeless to the point she was willing to get herself and the other survivors killed to avenge the death of her closest friend, who had been shunned by the rest of the group. It took the support of her other classmates and learning that Sakura had sacrificed herself to try and save the others for path to recovery to begin.

Aoi very quickly gravitated towards Sakura as a fellow athlete, and the two formed a very strong bond, spending the majority of their free time together and becoming very protective towards each other. She also became extremely close to Makoto Naegi, whose ability as the Ultimate Hope was vital in her path to recovery both during the Killing School Life and when she was emotionally tested once more by being thrown into the Final Killing Game. Aoi was very effected by Makoto's strong and unwavering belief in the power of hope and friendship, and in her darkest moments during both the Killing School Life and Final Killing Game, he was able to bring her back from the brink and believe that the future was worth living for to honor the memory of the friends they lost along the way.

Aoi's athleticism is a core aspect of her personality and sense of self, and she participates in multiple sports including track, basketball, softball, volleyball, tennis, and her favorite sport: competitive swimming. Aoi is a young Olympic cadet who aims to win a Gold Medal for swimming in future Olympic games. Her younger brother Yuta, also a very strong swimmer, admits that Aoi is a better swimmer than him. By her own admission, Aoi spends nearly all of her time training and trying to improve her fitness in some way, including wearing shorts all year round - even in winter - to build up her resistance to sickness, and practising the self-healing technique known as Kanpu masatsu.

For Aoi, her love of sports doesn't come from her desire to win, but for the love of competing and striving to better herself. In her own words: "What I really love about sports isn't winning, ya know? It's having to fight and struggle and give it all you got to reach the top. It's that excitement, that fear that you might suffer a heartbreaking loss. When you finally reach that goal, it's just...lonely. It's lonely at the top, ya know? So that's why I want to push myself as hard as possible when it comes to swimming. I want to aim for the very highest mountaintop!"

Due to her fitness and athleticism, Aoi is capable of holding her own in a fight if necessary, as was shown when she engaged in a fight with Juzo Sakakura. She was able to dodge most of his attacks despite being unarmed, and even pinned his weapon to the ground. She is also much stronger than her small frame suggests, able to run at top speed for long periods of time while carrying the 52kg weight of Makoto Naegi on her back during the Final Killing Game. She was also able to move a large piece of furniture that both Makoto and Ryota Mitarai could not budge even with their combined strength.