Akua Aino

Akua Aino is the real younger sister of Aoi Aino, sporting a distinctly androgynous look as a current middle schooler. Driven from a young age by the desire to capture her brother's attention, she threw herself into training across multiple martial disciplines—a dedication that has since forged her into a genuinely fearsome fighter. On the surface, she treats Aoi with cold indifference and even occasional aggression, yet beneath that tough exterior lies an intense, almost obsessive affection for him. She makes no secret of her hostility toward the girls vying for Aoi's attention. Ironically, despite her overwhelming combat prowess, she crumbles instantly at the sight of ghosts or grotesque creatures—a charming contradiction that defines her character.