[Another world, humanity, demons, Demon King, hero, magic] Also known as: "I Came to Another World, But Got Nerfed Instead"
The protagonist, a demon from the post-apocalyptic world, transmigrates to a strange new world. On his very first day there, not only does he fail to get any cheat abilities, but most of his strength is gone as well.
“This place is way too safe. I don't even get a chance to show what I can do. So, what should I do around here next?”