I'm being forced to have sex with my husband's stepchild. -To protect the family ties... Gang-rape at the sinners of stepmothers who continue to be raped -

Miyabi marries a man she met at work. Although she was having a happy life with her husband, her stepchild, Eugen, was at a loss as she couldn't open up to her heart. He tries to close the gap somehow, but Yuuji, who has been betrayed by his previous mother and becomes distrustful of women, tries to use her as a sex tool to drive her out... Miyabi continues to follow his orders in search of family ties, but Yuuju brings his classmates home and plays with her even more mercilessly. And Miyabi is in the days of endless shame...