Aoi Asahina, also known as Hina, is a student in Hope's Peak Academy's Class 78th, and a participant of the Killing School Life. Her title is the Ultimate Swimming Pro. Aoi's athleticism is a core aspect of her personality, and she participates in multiple sports including track, basketball, softball, volleyball, tennis, and her favorite sport: competitive swimming. She's also concerned that her extreme sweet tooth, particularly her love of eating donuts, is going to make her fat.