Mahiro Ichiki, a second-year office worker whose mother remarried and now lives with her father-in-law and brother-in-law. When I was bored with a lot of home work due to the corona sickness, I accidentally learned that my brother-in-law had a big cock and got into heat. Every day I seduce my brother-in-law during online classes and have sex from daytime. Finally I ran out of condoms and had raw sex (creampie)!