A brother welcomes his sister into his room after she misses the last train while working overtime. This has happened a few times before, so he lets her use the living room as usual. His sister says she still has work to do and starts working on her laptop. When he goes to the bathroom, he finds his sister asleep. It seems she fell asleep while typing on the computer. The kind brother tries to cover her with a blanket, but he is interested in his sister's thighs. He is also a man... He gets an erection from seeing his sister like that. He touches his penis over his pants reflexively. He also masturbates a little, using his sister's thighs as a masturbation aid. He rubs his penis against his sister. His sister doesn't notice... he thinks it's pretty good. The brother rubs his penis against her thighs a little more boldly, and his sister wakes up. "Hey, what are you doing?" The brother is naturally scolded. The brother tries to cover it up somehow. The older sister sees her younger brother and laughs, "I see, you still don't have a girlfriend, so it's not surprising. You're a guy, too. I'll help you." She starts with a hand job and then a blowjob. When the younger brother still doesn't cum, the older sister says, "We're siblings, so I can't put it in, but I can just rub it, so you can cum with that." and starts doing intercrural sex over his panties. As she does intercrural sex over his panties, she says, "You're getting wet... I'm going to take off my panties because they'll get dirty." She immediately starts intercrural sex. She takes off her skirt and starts to move her hips in. She gets aroused, starts massaging her breasts, and opens her clothes. She heats up as she does intercrural sex while dripping saliva. The older sister notices that the younger brother has accidentally inserted himself, but just lets him do it. The older sister clings to her younger brother and shakes her hips. The younger brother ends up in the missionary position and accidentally cums inside her. "I'm sorry, older sister..."