Her father passed away early, and her mother had to work hard to care for and raise Akari Neo alone until today. Mirei knows her mother has sacrificed a lot for her, so she also wants her mother to be happy. And when her mother introduced Akari Neo to the person who would soon become her new father, Akari Neo had a very strange feeling about this man. Just like her intuition, he was an animal disguised as a human. While his mother was away from home, he used violence to suppress and take over Akari Neo's body. How could a weak-legged and soft-armed schoolgirl escape the hands of a man? Akari Neo could only cry for help in vain. However, seeing her mother's happy smile, Akari Neo had to grit her teeth and endure, accepting to let him fuck her day after day, accepting all his perverted requests...