Xiao is a wealthy prince who was born with icy powers, over time this power became addicting to Xiao, and with that power he conquered demons and freed human towns, but there was one demon Xiao had never been able to defeat, the white bone demon, he’d discovered this demon after meeting someone who had black hair who wouldn’t give him their name, anyway he hasn’t seen them since then since he has been focused on trying to get rid of the demon