Late at night in the girls' dormitory of the Purge Music Academy, which is famous for attracting the daughters of famous families, the screams of female students echo through the quiet dormitory. Kaori was tied up in such a way that her butt was sticking out, and her lower body was exposed, and she was about to undergo a humiliating cleansing. Looking down at Kaori, who is crying from her overwhelming love, and smiling slightly at her, is the newly appointed manager, Kato Shusaku, who just arrived about a month ago...