A brief description of the manga Lord of Goblins:
Corruption. Greed. War. Lev is no stranger to the evils of the world, as he has spent his entire life fighting the predatory system that ensnared the world’s population and turned them into puppets for the leaders of humanity. But when he is assassinated, he finds himself in a new world — with different yet familiar evils. It’s a similar road he must traverse, but this time he can do so with a lifetime of experience behind him.