Yuri is always a kind mother. Before Kenta knew it, he had fallen in love with Yuri and began to plot to make her his own, not just as a mother, but as a woman. Unable to suppress his desire, Kenta attacks Yuri and forces her into a chastity belt. "From today, I'll be in charge of Mom's sexual desires. Whenever you feel like having sex, come to me." He drives Yuri into a corner by making her unable to have sex with anyone other than him...