Ten years ago, a mysterious spatial anomaly now known as “Heaven’s Gate” appeared in South America, shortly followed by the opening of “Hell’s Gate” in Tokyo altering the sky and…

Kenzou Tenma, a Japanese brain surgeon in Germany, finds his life in utter turmoil after getting involved with a psychopath that was once a former patient.

In a post-war alternative timeline, Japan is divided into the North, controlled by the Union, and the South, controlled by the United States. A mysterious high tower rises within the…