Can anyone tell me which eroge this image is from?

[Argwnan]

Can anyone tell me which eroge this image is from?

 

[demonicslayer]

After some searching, I can definitely say it is an eroge from a company called "ruf". The game is called Dokusen or 独占.
I've link the getchu link for your reference.
https://www.getchu.com/soft.phtml?id=5885&gc=gc