The World of Killing and Cruelty

An ace in the world of bodyguards, died in an unexpected mission, and exchanged a promise that could not be fulfilled in reality for a new life. Come to a land where the strong survive, a world full of blood and cruelty, a space only for fighting. Powerful races abound here, and humans are constantly being expelled. His appearance has rekindled humans' desire for survival. After many years, he finally stood on the top of the world and looked down at the earth.