Ryota, who lives with his father, recently broke up with his fiancée and was depressed. In such a situation, my father was unable to introduce his remarriage partner, Momoko. When she talks to Momoko about it, she says, "I'll comfort you!" and the three of them start living together. Even when his new life began, Ryota remained closed in his heart, but one day, he had a bowl match in the bathroom with a naked Momoko. From that day on, Ryota regained his energy, and Momoko who saw it became more intense day by day.