Humanity has been oppressed for hundreds of years due to the rise and invasion of the natural enemy "demons". The world was ruled by the "Great Demon Lord" and his 47 "Demon Lords". While...
From Viz: Every time a promising villain appears, Saitama beats the snot out of ’em with one punch! Can he finally find an opponent who can go toe-to-toe with him and give his life some meanin...