Rina, a younger sister, came to take care of her brother who had caught a cold. The older brother fell asleep before he knew it, but when he woke up, his younger sister was leaning against the bed. His younger sister smelled really good. He couldn't help but smell her hair. He peered into her cleavage, and in the futon, he took out his dick and started stroking it while smelling his sister's hair. Even when his younger sister woke up, the older brother was so engrossed that he didn't notice. He was pointed out by his younger sister and it was awkward because he couldn't make an excuse. Then his younger sister made an unexpected suggestion: "I just broke up with my girlfriend, and you're a boy too, so this kind of thing happens. Just this once, can I help you get it out?" The younger sister was too embarrassed to look at her older brother, but she put her hand under the futon and started stroking it with her hand. The older brother was getting more and more excited, so he pushed the futon aside to show off his dick. The younger sister was embarrassed, but she didn't stop. But the older brother, who couldn't get it off, requested that he touch her breasts. The younger sister let him touch them, but he still couldn't get it off, so she tried a blowjob. The brother still can't get it on, so she requests that she perform cunnilingus on him. With no other choice, she takes off her skirt and panties and does 69. The brother still can't get it on, so she suggests, "We're brother and sister, so I can't insert it, but I can rub it, so you can cum with that!"