Yumi, her best friend, comes over to talk to her about her husband's severe, almost pathological, cheating habit. She is annoyed by her husband, who keeps making convenient excuses like "It can't be helped, he has an abnormal libido" and "Women come to him" and shows no signs of remorse. She finally says, "Show me what your rough dick is all about!" and when she takes off his pants... what appears is a big, strong, thick penis. Yumi intended to make fun of him, but she was so captivated that she gasped and couldn't contain her daily frustrations, and she plotted to somehow insert this insatiable penis into him.