Polo Yazaki

As a begrudged detective investigates a recent string of murders, he soon discovers his prime suspect is a mysterious vigilante out to bring down a ruthless up-and-coming crime syndicate.

Doppelgangers from a parallel universe have assumed the identities of their opposites. To stop the threat of a mass invasion of look-a-likes, Structure, a covert agency that polices interdimensional travel, has sent its best assassin.