The dark suspense story is set in the modern day and centers around an assassin enshrouded in mystery. To decide whether to execute an assignment or not, he personally meets the target before handing down his final judgment. The story follows the drama that comes from his conversations with the target.
Due to certain circumstances, the left side of the assassin's body has hardly any internal organs. He is weak and unskilled at guns, but he does possess psychokinesis.
[Source: Anime News Network]