The Demon King Dad And His Hero Daughter summary: Selene, the daughter who dreams of becoming a hero, and Shion, the demon king who adopted her. Shion has to conceal his true identity at all costs, unable to cheer on his daughter’s dreams or attempt to stop her.This is the story of Selene’s journey to becoming a true hero amidst this dilemma… Or is it the parenting story of the demon king?!