For high schooler Kei—and for at least forty-six others—immortality comes as the nastiest surprise ever. Sadly for Kei, such a feat doesn’t make him a superhero. In the eyes of both the general public and governments, he’s a rare specimen who needs to be hunted down and handed over to scientists to be experimented on for life—a demi-human who must die a thousand deaths for the benefit of humanity.

The story is set in a strangely streamlined isolated prison with unusual inmates — a seemingly honest and good young man, a sensual woman, a former military middle-aged man, a young female otaku, a mysterious old man, and a cat. One day, a sudden power outage opens the locks to all the cells, and everyone is set free. However, all of the guards are missing, and the prisoners cannot find any exits. When the old man performs a bizarre act, an unusual phenomenon befalls the prison and the prisoners within. (Source: AnimeNewsNetwork)

A four-film omnibus that features four short anime films all themed around Japan.