Yuta reunites with his college friend Toru, who boasts that his beautiful, sex-loving wife Kanna still fucks him three times a week. Single, frustrated, and insatiable, Yuta grows bitter and secretly visits Kanna, forcing her down. She resists his uncontrollable assault but is made to climax. He then keeps returning five days a week and creampies her four times per session, for a total of twenty weekly loads. Eventually, Kanna becomes so accustomed to Yuta’s stamina that her husband can no longer satisfy her.