Well, from what I gathered from reading the back covers of the mangas, there's probably some sort of sexual innuendos and that sort of thing. I remember reading that one of the goddesses comes to help the main character become more skilled "under the sheets" or something like that. O__o;;;; I can't comment on the anime version, but I have heard it's clean. I agree, really the only thing to do is look at a manga or the anime yourself and see if it's any good for you. XD;