A former Demon King of a demon realm that fell long, long ago. The previous Demon King summoned him into being as a familiar for war, but when everyone else perished, he was left alone in the demon realm. Perhaps because of what he went through, he became a paradoxical demon with a kind heart that doesn't match his looks, and despite his overwhelming power, he has never fought on his own. But maybe he could no longer stand by and watch any more pointless fighting, because he has descended with a wish that everyone would care for one another!
Their wish I wish peace would come to the world