Identify What Hentai Was This?

[6DarkRaven9]

Its been a long time but it was just on some porn site so the title wasn't included. It had those stupid titles like 'slut gets pounded on table' stuff. Nothing to identify it with the real title.
Anyways...
1. It took place at a mansion
2. There was a maid that killed people?
3. People started getting it on with something supernatural? taking them over?
4. The girl at the end gets deflowered by another guy and the guy who likes/loves her watches as the maid comes from behind and kills him with a blunt object
5. It was a modern hentai probably 2010-2017


Since my last threat is older and no one seems to know I'll start another hoping someone has some ideas.

So far its not
1. Toriko no Kusari
2. Tsubaki Iro no Purijioone
3. Behind Closed Doors

 

[Maybes]

a bit late, but isn´t that Dark Blue? (not sure, as i saw it reallyyyyyyyy long time ago, and didn´t really like it)