Konatsu and her husband's son has been down lately. He's been struggling with work and relationships, and has even quit his job. The couple is worried and tries to cheer him up by talking to him and giving him nutritious meals, but his spirits haven't lifted. One night, while the couple is having sex, Konatsu sees her son peeking in and notices his erection. The next day, after her husband has left, Konatsu talks to her son. What happened last night...