The younger sister of a female student is sleeping soundly with her panties fully exposed. The brother, excited by the sight of his sister's naked lower body, immediately grabs his penis for a wank session. However, he is quickly noticed, and his sister treats him like a pervert for lusting after her, but she gradually starts to feel sorry for him. This sister thinks that if her brother turns into a sex offender it would be troublesome, so she says, 'Are you built up? Let me help you release' and gives him a handjob and blowjob. But since the brother can't seem to cum, his sister, fed up with waiting, says, 'I can't let you insert it, but I'll let you just wear it'!
