"Mom, you have this hobby..." Yuto discovered a hemp rope in his mother's room. But he wasn't confused. On the contrary, he was convinced. His sexual inclination to tie up women was inherited from his mother, Yuka. Yuto had worried that he might be abnormal, but he was relieved to find out that Yuka was the same. My mother is just like me. So my mother should understand this uncontrollable urge. With this in mind, Yuto decided to train Yuka in bondage.