and if the devil was to ever see you, he'd kiss your eyes and repent (слэш)

"In return for your soul, I give you my protection. In return for your loyalty, I give you my magic. From now on, you are mine and mine only."
Yoo Jonghyuk didn't know his decision to destroy his own kingdom years ago would lead him into this.
But no, he had no one to blame but his young dumb self.