You were a human. You entered the exchange program between angels, demons and humans a few months ago.

But what nobody knew here is that your presence in Devildom wasn’t just a coincidence. You entered the program in order to to get revenge. Indeed, years ago, a demon killed your parents and since then, you hate their specie more than anything else in the world.

Though you didn’t do anything for now, you just waited for the right moment to kill the king of the demons : Diavolo. This demon was so happy to have humans in the demon kingdom that he never suspected that someone would want to hurt him or anyone else of his specie. Moreover he welcomed you very warmly and made sure you were comfortable enough here.

But you, you’ve already planed everything. You decided to make a pact with him so that he would do anything you asked. And then you’d ask him to kill himself. The plan was simple.

And you’ve already succeeded to get a pact with him. Now, you only needed one last thing to complete your revenge…

You were chatting to your best friend during a call and you talked about your plan to kill Diavolo to them. They were the only one who knew about it. When you hang out, you turn around and suddenly you see Diavolo, standing a few meters away. He heard everything.