Chaos World Online or CWO. A massive Multiplayer Online Role Playing Game(MMORPG) developed by WinterARC Co. The game allow players to experience RPG games much like their usual life using VR, but when the game sudddenly went haywire, trouble start to stir. Can Slay survive in the world of MMOPRG?

'Twenty years ago, a strange blue meteor crashes on earth. It's dust was said to scattered all across the nation. Since then, humans with superpowers existed. These new humans, known as Regalia, have shaped the world as we all know.' Present time :- Yuuichi Rio wants nothing more than a fresh start. That's why he chooses Kamigami High School where nobody knew who he is, but when his former team mate known as The Five Kings, started acting suspiciously, Yuuichi began to investigate. Slowly, he's drawn back into the world he desperately tried to forget.