A close brother and sister. ■The younger sister has just gotten her first boyfriend and is going on a sleepover date, so she consults with her older brother. So, let's practice in advance, pretending that the older brother is her boyfriend. She thought it would be a sumata (intercrural sex), so she started thrusting through his pants, but the older brother couldn't hold back and started to slip! ■The younger sister came to visit her hospitalized older brother and decided to help him masturbate. He asked her to do a sumata (intercrural sex), but the younger sister ended up getting more and more aroused and started to slip! ■The older brother and sister are relaxing in the living room. The older brother secretly gets an erection at the sight of his sister's defenseless chest, but he is found out. Just when you think he'll be put off, the younger sister, who has a bro complex, says, "I want to see your penis," so he unleashes his big cock! ! The excited younger sister says, "I want to rub it," and when she requests a sumata (intercrural sex), he ends up slipping.