Atsushi, who was left behind after his daughter-in-law returned to her parents' house, spent her time in a messy house without doing any housework. Worried about such Atsushi, her daughter-in-law's older sister, Sora, comes to help her with her housework. While she feels a little guilty about inviting a woman other than her daughter-in-law to her house, the sudden visit of her sister-in-law, who is her relative, was a great help to Atsushi. However, Sora's purpose is to solve her own frustration with her sister's husband instead of her husband. When Atsushi was taking a bath without knowing such a thing, Sora...
