IENFH-043 A girl student's younger sister took pity on me, a useless guy, and agreed to let me grind against her. We ended up doing 'so-ko' (faux sex) and it felt so good that her pussy was soaked! I slipped right in! "What!? It's inside?" But I couldn't

The younger sister of a female student is sleeping with her panties fully exposed. The brother, excited by the sight of his sister's panty-less state, immediately grabs his dick for a jerk-off session. However, he is quickly noticed, and his sister labels him 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 pervert 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 cum, his impatient sister says, 'I can't let you insert it, but I'll just put it on'.