Need help on fiinding a tentacle doujin no longer on a lot of sites

[ShinobiRukario]

Hi there! I'm on a quest to find a doujin that's been taken down from a lot of sites (or so it seems) and I would love any help in finding it. Basically was a vanilla-ish story of a boy accidentally turned into a tentacle monster by a princess from another world who speaks in stereotypical medieval english. It had a few chapters that I know of and at one point he even shows up to school and bangs everyone there too. Here is the only picture of it that I could find:

Anyone out there that can even remember the name or find a site with it would make me the happiest person on earth.

 

[天元 ルイ]

google image search http://pururin.com/gallery/7279/tentacle-lovers.html