Guys I have a theory What is the demon King I was reincarnated as Dan remember our FL was really old before she aged backwards and when Dan first Met our FL it was already a few years after the demon kings downfall so it's completely possible that during that time the demon king reincarnated and that could also explain Dan's overwhelming power
But what I still want to know is this Dan would keep that promise you made while he was still The demon King
Guys I have a theory
What is the demon King I was reincarnated as Dan remember our FL was really old before she aged backwards and when Dan first Met our FL it was already a few years after the demon kings downfall so it's completely possible that during that time the demon king reincarnated and that could also explain Dan's overwhelming power
But what I still want to know is this Dan would keep that promise you made while he was still The demon King