Holy, I wasn't expecting that, I never would have guessed for it to get more explicit, as little as it actually is. Still, it's a nice surprise that it manages to be pure fluff and get into more lewd stuff without really breaking that feel.
@Lynkaster: They don't need to search on another site, the two porn side stories exist on this one. They just need to manually permit the visibility of H manga/doujinshi in the settings.