Before getting a job in Tokyo, Koichi comes to Momo Reio and her two on a hot spring trip.
Reio's husband refuses a family trip because he is busy with work.
My husband is actually having an affair.Reio is worried about this alone.
When Koichi sees his mother's depressed expression, he gradually becomes aware of her as the opposite sex.
Koichi sways between the bond between parents and children and the emotions of men and women, and seeks Reio.
