Candy Cube, the same company behind the R-18 drama CD Kankin Danshin ~The Imprisoned Two~, has put up a website teaser for a new R-18 PC game Anata wa Jinrou desu ka? (translation: Are you a werewolf?). The subtitle translates to "The person I loved, was a werewolf who ate me". It also writes that the genre will be a dark fantasy romance.
More details will be posted whenever Candy Cube updates with more information.