Kana Momonogi's father has 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 tell her mother and tries to be normal with him to keep her mother happy. However, after living in the house for a few days, her stepfather revealed his true colors and had bad intentions and bad actions towards his daughter Kana Momonogi. In the end, she was raped by this stepfather and pretended that nothing happened in front of her mother. All because Kana loves her mother, she decided to sacrifice everything.