Recently, my mother-in-law, Tomoka, has been acting very strangely. Right after her father left the house, she put on her makeup and snuck off somewhere, and came back in the middle of the night looking tired. Tormented by guilt for doubting Tomoka, Wataru goes to a sex club to vent his frustrated feelings... Surprisingly, Tomoka himself appears! Tomoka stops Watari from rushing home, but...