The mother married her uncle to rape her daughter....

Kana Momonogi's father had been dead for several years, so Kana Momonogi's mother decided to remarry. Although she doesn't like her new stepfather, Kana Momonogi doesn't dare to tell her mother and tries to be normal with him to keep her mother happy. However, when he lived in the house for a few days, his stepfather revealed his true face and had bad intentions and bad actions with his daughter Kana Momonogi. She ends up being raped by this stepfather and pretends that nothing happened in front of her mother, all because Kana loves her mother she decides to sacrifice it all.