Kôichi Hatsumi

After being falsely convicted for the murder of his entire class, a young man must learn to survive in a mysterious prison with a perverted take on incarceration while also looking to clear his name. (imdb)

In the late Edo Period, a demon known as the Impure King killed thousands of people. After defeating the demon, the Knights of the True Cross kept its left eye safely sealed away on Academy grounds - but now someone has stolen it. Hearing the thief has taken a child hostage, Yukio and Rin go to help. The investigation and pursuit will lead Rin and his friends to Kyoto and involve them even deeper in a sinister plot. (imdb)