Psychological

Mc 'suicide(?)' and is now something that can control or is in every electronics,legit anything....obsessed over an idol(typical girl who was nice to him when he got bullied),will kill anyone who diss her.

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.