One day, instead of my wife who left home for childbirth, I suddenly began to live together with my sister-in-law. I want to talk to my sister-in-law, but... I can't get my hands on the family, so I set up a camera around the house to steal the life of my young and cute sister and make it an okaz. my sister who thought she was pure is a jealous man! what? i'm looking for my chico.