My mother told me to perform sex work to my brother everyday (an abnormal sex offender), to control his sexual desires

Akari’s brother rapes her, and from that day on, the family broke down. The brother then raped another girl at his part-time job and got caught, ending up in prison. Several years later after he gets released from prison, but he became a madman and chronic masturbator. Him returning home was something pretty intense, and Akari was afraid of him. But Akari’s Mom is more afraid of him becomming a loose cannon and causing more trouble, and so, she suggests for Akari provide him with some “sexual relief”…