Ten years ago, the starry sky in Tokyo disappeared, and a field appeared in Tokyo that could not be scientifically analyzed. Due to the emergence of that realm, the sky was restructured, the bright moon disappeared, the stars shifted, and was replaced by a false night sky that was forever silent. Since then, real stars have never appeared in Tokyo.
However, the consequences of this abnormal phenomenon are not just that.
People who came out of that unknown territory were also affected by the strange phenomena. They gained what the world calls supernatural abilities, but the price was the permanent loss of their dreams and hearts as human beings. As a result, that mysterious area was called the Gate of Hell, and the people with superpowers who came out of it were called Contractors...