Absolute Dominion: He Runs the Apocalypse

DramaBox synopsis

After transmigrating as a Wraith, Ryan Archer finds himself trapped in a post-apocalyptic wasteland and hunted by an S-Class Zombie. In his desperation, he contacts the Human Federation and turns himself in. He gains a powerful system and becomes the Mayor of Riverwatch. To complete the bizarre mission of rebuilding human civilization, he transforms into the CEO of a bathhouse and recruits powerful Wraiths as employees.