Pls help me

Hey guys recently i've been searching a hentai that I have watched but I obviously couldnt find it. Maybe it was a sidestory in this hentai but it was about a girl who thought that her pussy is a penis. She got got fucked by a schoolboy and the boy says while having sex with her that she has a pussy and not a penis. It would be awesome if you anyone could find this hentai. Maybe you will get reward then