``I'll wash your back.'' ``Oh, sister-in-law!?'' Her big breasts with large areolas stuck to Takuya's back. My lower body immediately reacts to the soft touch. (Why did this happen...) It all started when his sister-in-law, Ayaka, suddenly came over. It's already been a week since my wife got pregnant and returned to her parents' house. Although Takuya is enjoying living alone for the first time in a while, he feels lonely.