Surely, you’ve heard of the Ishizoku Reviewers anime series, haven’t you?
In a fantasy world (a rather nice one, there all kinds of species of humans, monsters, demons, angels, and more, and everyone essentially coexists peacefully), men are touring brothels to have sex with women of all species, and they write funny reviews about their experiences.
Well, here’s the manga version ^_^
This will only count as slightly ecchi, you won’t have actual sex, only occasional partial nudity, but I giggled a lot, all along, that was a worthy discovery in my opinion 
I have no idea who released this one, so, thanks to whoever is concerned!
