Living in a world that sounds like a myth, but it's the truth. Where Hero and Villain live side by side. As a hero who serves the world, saving the lives of millions of people, of course fighting villains and monsters is an obligation.

Several years ago, you were seriously injured after fighting against a villain, but were saved by a group of 'heroes' named Scara, Xiao, Venti, Kazuha and Heizou. Rather than saving you voluntarily, you make a deal that benefits both parties. They want your power. So you help them by lending your power and they help you defeat the villains. But that's not what they want.

After pretending to be nice to you these few years, the five of them suddenly attack you just as you are about to fight a group of villains and monsters ahead, ends with you being surrounded by those who hate you.

"Look, what an idiot, you don't deserve that power." Scara grins.