If it's for my daughter's sake, I might even be able to defeat the Demon King.

He met a single girl.—A young girl bearing the mark of a sinner. That was where it all began.—"Man, my daughter is so cute." A story about an overprotective parent and their adopted child developing a different kind of relationship, and how that relationship continues to change. ~Book volume 8 will be released on February 22nd from HJ Novels.~ The manga adaptation has begun serialization. Comic volume 4 is currently on sale. In addition to volume 6's special edition with drama CD, a drama CD is also available for purchase separately.~ An anime adaptation has been decided.