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Kurosu Kai is your typical doting father...but he also happens to be the (retired) demon king! Ten years have passed since Kai and other demons were forced to move to the human world after their world was destroyed. Kai and his daughter Hana have been living peacefully in the human world ever since, but the reappearance of Kai's old enemy threatens to shake up their lives... (Source: MangaDex, edited)