"I can't take it anymore!" Yuriko (Yuriko Mikumo) desperately resisted her son as he attacked her, yelling, "I can't take it anymore!" She had noticed something was wrong with her son since he'd seen her bathing. But she never imagined he would be so aroused by her, his mother... Unable to resist the strength of her son, who had grown into an adult body, Yuriko eventually gave up on resisting and made a suggestion since they were going to cross the line anyway. "I'll teach you how to treat a woman," and thus began Yuriko's sex education for her son...