Romance manhwa/manga/manhua with child

“It’s precisely because of the academic degree that we do theses. Your research is useless.” Ein is a mage who was dismissed from the Ministry of Magic without getting a degree. However, after adopting an orphan, a girl named Shannon, Ein succeeds in developing a new magic that that allows him to be on par with the twelve eminent figures in the history of magic. As a mysterious mage, he will shake the world with his magic!! A topic in the “Let’s become a novelist!”! An exciting magical fantasy