Hitman just launched Season 6 of content in Hokkaido, Japan, which now opens up the final PS4 exclusive target, The Controller.
The target, aka Taheiji Koyama, is the final living member of the SIGMA paramilitary group. Koyama suffers from a rare genetic disorder, but has refused bone-marrow donations. He is located in a rather secure hospital, and is aware of the deaths of the other five members of the group.
The mission is part of the Sarajevo Six set of contracts for PS4 players that tells a self-contained side-story revolving around former members of a paramilitary unit called CICADA.