Shino Amakusa

Serving as the diligent second-year student council president, this highly intelligent and popular girl maintains a serious academic reputation while secretly harboring a perverted inner monologue. Driven by a curiosity for topics absent from health class, she finds herself drawn to Tsuda, eventually developing genuine romantic feelings for him. Despite her prestige and many female admirers, she struggles with deep-seated insecurities regarding her bust size, especially when comparing herself to the more well-endowed Aria.