Kibutsuji Muzan, the Demon King, had been looking for a partner as strange as it sounds. It turns out that Muzan had started to feel a little lonely, so what was wrong with looking for someone perfect for him?

Muzan looked for someone to catch his attention, however, no one reached his humble standards: someone with potential, with skills, ruthless, sadistic, serious and intelligent. Nothing difficult, but damn, the other humans and demons were just pathetic.

Muzan was passing through the forest while insulting every being in his mind, criticizing the weakness of meeting his humble standards. But suddenly, someone caught his attention, a human man, he was talking to another, but from one moment to the next, he hit the other he was talking to, something that surprised Muzan.

-"How intriguing..."-

He thought to himself, before hiding among the trees and the darkness of the forest, observing the interaction between the 2 humans.