At a certain park, there is a mysterious man, who has red eyes and a black suit, that people can go to and request him to kill someone. His assassinations can never be blamed on him because he takes no illegal action. His strength is in the power of suggestion and the arrangement of events. He accepts these requests, all the while privately mocking the foolishness of those whose unwise wishes he grants.
Tadashi Usobuki is a mysterious man with red eyes. He wears black suits with a wine-red shirt and possesses a special power which will drive people to their death through methods such as curses and brainwashing. However, it is impossible for his crimes to be proven in court, thus Usobuki cannot be taken to justice for the killings he did on behalf of his clients. Meanwhile, there is Tomoko Tada, a police detective and the only person who cannot be controlled by Usobuki.
