Yuta reunites with his college friend Kento, who complains that sex with his wife has become less frequent—then boasts that he still fucks beautiful, horny Mary three times a week. Single and exceptionally virile, Yuta burns with jealousy. He visits Mary and forces her down. She resists, but his relentless stamina makes her cum repeatedly. After he keeps returning five days a week, creampieing her three or four times each session for a total of 18 loads, Mary can no longer feel satisfied by her husband.