Tatsuya enjoyed living alone for the first time in a while while his wife was pregnant and went home. However, I started to feel lonely after living alone for a week, and when I started to miss people, my sister-in-law, Tsubasa, came to help me with the housework. Tatsuya welcomes the sudden visit. However, Tsubasa's real purpose was to relieve her frustration with her Tatsuya while her daughter-in-law was away from home. Tatsuya, who has no way of knowing about such a scheme, is just soaking in the bathtub...and then Tsubasa comes in...
