While tending to her brother who has injured both hands, the older sister sees his erect penis and gets excited, offering to help him masturbate and beginning to give him a handjob. She can't get enough of just stroking it, so she takes off her panties and rubs it against her pussy, before finally inserting it and swaying her hips in a cowgirl position for an incestuous encounter. The younger brother is unable to do anything due to his injuries, and even after climaxing to his sister's pleasure, he is made to sit on her face, being treated like a tool to satisfy her sexual desires and made to cum over and over again. *This work is a part of the "Borderline incestuous life with my sister who lets me insert the tip up to 3cm" series. This is an excerpt from "Mitani Akari" (product number: dvaj00434).