Legend has it that there are four gods in the world, with different personalities and abilities. Anyone in the world who is not a demon can come to fight. The winner can take the place of the gods and shoulder the important responsibility of guarding the world. Wherever there is light there is shadow, where there are gods there are demons. But our demon king is perverse and disdains to compete with gods for the world. As a result, the demons are leaderless and inferior to gods in strength. The world is therefore peaceful and prosperous... But in the eyes of Suman, who lives in the 22nd century, all this is just an online game.