In recent years, the series received a "RE" treatment, which updated the visuals and streamlined the story of the original visual novel. Released.

, is well-known in the adult animation community for its intense themes. Release Date and Availability Episode 3 of the original series was officially released on November 29, 2013 . Unlike traditional television anime, this is an Original Video Animation (OVA)

The original series consisted of 4 episodes.