Even though my father just remarried, he doesn't come home much because of his business trips. So it's just me and my stepmother, Shinobu, at home. One day, I casually went to the kitchen and saw Shinobu masturbating. When I returned to my room, I couldn't get it out of my head and started playing with my dick, and Shinobu came into my room... Now we take baths together, and I'm so close that I don't have to worry about it even if my father isn't there.