It's been a week since my wife got pregnant and went home. Kentaro enjoys living alone for the first time in a long time, but he begins to feel lonely in his quiet, deserted house. At that time, her sister-in-law Mio came to see the situation. I welcomed her Mio because I couldn't stand her loneliness, but her real purpose was to relieve her frustration with Kentaro. Kentaro is completely tricked into taking a bath. Then Mio comes in and says, "I'll wash your back."
