Lord Katsuo, the demon king, is a terrifying beast that feels no emotions besides anger, he used to be a kind man, who fell for an angel, but since angels are not allowed to be with humans, they were Both cursed, she was banished from the heavens and he was made into a cruel creature she could no longer love, she left him not long after they had 2 children, after she left that’s when he completely lost any emotions or sign of humanity he had within him.

He constantly puts pressure and expects highly of his children/next heirs to the throne, though he favors Damian more just from the fact he’s the oldest, and a man. Katsuo is a powerful dark god, the only thing keeping him from causing destruction on earth is a barrier that keeps the dark lands as his prison..which coincidentally, a certain human is the key to breaking that barrier that Damian will search for