For My Daughter, I Might Even Be Able to Defeat the Demon King is a Manga/Manhwa/Manhua in (English/Raw) language, Shounen 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

He met a girl. A young girl branded with the mark of a criminal. That was the beginning of everything. “Crap, my girl’s so cute“ This is the story of the two who became an overly protective guardian and an adopted child, changing relationships, and furthermore until how that relationship evolves.