After Becoming Invincible, I Became the Great Demon King

A System falls from the sky.

After messing around with it for a while, I realize it's more worthwhile to hand it over to the state.

Day one: I'm going to be a good person.

Day two: I'm a good person, right?

Day three: I'll try to be a good person!

Day N: What do you think you're doing...

on my Earth?

Are superheroes coming to take me down?

Did you forget that superpowers only exist because of me?

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.