After restraining his sister-in-law, he only inserted the tip 3 centimeters, and then, due to their excellent compatibility, he ejaculated inside her without pulling out. (Natsume Ayaka ADN-486)

My wife left me because of my excessive sex drive, and I haven't had sex for over a week. I'm going crazy. So I decided to boldly ask my sister-in-law for help, afraid I might end up having an affair. Just three centimeters, thirty seconds, let me penetrate her.