Who is the character in that profile picture? What it that hentai?

Just some random profile picture I saw on some discord server. Had to leave a lot around it in the screenshot that I censored because this website wants a minimal picture size bigger than the profile picture for posts.
Anyways, if this is some fanart, please name the character it is based on. If it is from an actual hentai, the name of it would be good too.