After reading the whole series, I think this is very similar to hentai with all the liquids and girly uke, if he didn't have a dick it would have basically been hentai. Story line is minimal, basically just sex. And something that I always find off is how the seme always managed to throw the uke onto the bed I mean they should be careful you could crack a head open! But I guess it bothers me bc I'm more of a treat me gently and not rough kind of person. At least most of the time.
Senpai no Mizugi