I present to you the hentai game, which absorbed all kinds of perversions that could only come to mind our Japanese comrades. The developers of the game primarily position it as ADV - in other words, adventure. This is true, adventures will be lapsed. Clarifying the genre of the game, you can rather call it not an adventure, but a horror story, i.e. horror.
Somewhere in the mountains there is a mysterious mansion. With wax our heroes go there. The mansion is not just mysterious, it is fraught with a bunch of secrets and surprises, for example, what a butler costs, of course, you won't be given much choice, but like in many hentai games, you can switch between storylines when answering questions.