To Duel With Asura Means Death

A 'game' suddenly appeared on Earth 2 years ago — The game was simple, get stronger by either fighting through waves of enemies or challenging NPCs or other players. Once the player themselves get to a high enough level, they would have to challenge a boss in order to continue progressing forward.

And Asura was the second to last boss for players to challenge before they have to truly meet the final boss.

As a Boss and a devil, he was never going to be a good person. Yet when presented with the opportunity to discover the secrets of the 'game', would he not resist the chance for chaos and destruction?
Of course not! And so it begins, his journey accompanied by others to find out the truth of this 'game'.