The day the most diligent female student in the school was gang-raped by her classmates. (Tenma Yui, SAME-049)

Hinata, a diligent and well-behaved girl in the first year of school, harbors a secret she can't tell anyone. After school, in her seat next to her classmate Sato, whom she secretly admires, Hinata secretly fantasizes about slightly erotic things, finding pleasure in it. However, the troubled boy Yuuki witnesses this and films it. They threaten Hinata and rape her, using her as an outlet for their excessive sexual desires.