Jericho: Origins
When theoretical magician and magical engineer Rei Silver gets attacked in his home and gets no help from the police, he decides to take things in his own hands, purifying the rotten world he lives in by putting those he considers bad in carefully devised traps that kill the victim, should they not follow his exact instructions. Going by the moniker of Jericho, he must avoid being caught by the police, or it will be game over for Rei, and his dreams of ultimate justice-and his goals of making a perfect world-will all come crumbling down.
(Any artwork used is not mine, all credit goes to the original creator)