Nao and her husband inherited the tradition of showering their parents from their elderly father -in -law. However, the activity of the two people is very busy, the couple's time has ended and the life goes on. One day, just before the store was closed, Takahashi was normal, who always came, working in a public bathroom. Nao is near because she spends more time with him than her husband. The body, recalling the pleasure of making love while feeling guilty, leaking sounds panting every time he stabbed into the meat stick in the large community bathroom.