I don't remember much but what I remember is that one of the partners can't get hard so they try to find different ways to make the other partner excited.
This is so good, there's no rape, two friends start to date each other and when it comes to having sex, the uke tells the seme that he has a eractile dysfunction which means that it's hard for him to get hard because he doesn't where his erogenous zone is. And they start to find where his erogenous zone is. Very cute, the seme doesn't make the uke have sex with him but instead he patiently waits for him and tries to find his pleasure point before they actually do the deed! Loved it!
Kuchi no Naka no Shita