A Story About My Wife's Sister Coming Into My House While My Wife Was Giving Birth Back Home And Taking Care Of My Sexuality To Prevent Me From Cheating On Her With Another Woman. Hikari Ninomiya

My wife went back to her parents' house for childbirth in her hometown. I was living alone for the first time in a while and went overboard having fun. Whether she knew about that or not, my wife's younger sister came to the house. "Brother-in-law... you're not trying to cheat, are you?" Unable to hide my shock at her suddenly hitting the nail on the head... "To make sure you don't cheat, I'll take care of it instead..." she said...