Infinite Evolution: The Strongest Demon Hunter is a Vengeful Wraith?

I died in my world. Not peacefully of course, it was a shootout, like most of my life.Over there I was the Mob's greatest enforcer.They killed my parents and turned me into a soldier, lying to me for years. Until I turned those skills on them.But death wasn't the end unfortunately.I transmigrated into an alternate earth; one haunted by monsters, ruled by secret organizations, and crawling with things far worse than mobsters. But in this world, I'm not even human. I'm a Wraith, a ghost possessing my corpse in another world.But the rules don't seem to work for me. I never stopped evolving.Noah looked down at the Perfect Grimoire. "Huh? I never stopped gaining abilities."[Void Ice creation][Hellfire][Culling voice][Soul destruction]