"Wisdom tooth" worsened, and Kanako had no choice but to undergo surgery and hospitalization. Left behind, her husband Yukihiro's caretaker, Kanako's mother Sayaka, decided to visit the house for a while... Yukihiro felt excited about the rare moment with his mother-in-law, while Sayaka felt excited about the moment with a young man. One day, Sayaka accidentally saw Yukihiro's erect crotch. The two panicked, but the incident did not end there…
