The Demon King Dad and His Hero Daughter is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

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?!