[Brother-in-law and sister-in-law × shared room ×unequaled] A shared room with my brother who was made by my parents' remarriage! - When I wake up one morning, I have a stain on the bed that I don't remember and a sticky Nani in my crotch. - The next day, when I woke up with discomfort in my crotch, I was by my brother! We're going to be brother and sister...! Even if you try to resist, you will get sick of the feeling. - After crossing the line without being able to escape her brother's unequaled hold, she continues to steal her parents' eyes and have sex, and gradually feels attached to her brother's unstoppable sexual desire with convulsions and squirting.