Read manga: My Heroic Retreat

Manhua
Summary:

My Heroic Retreat , That year, I came to this continent, and with my unparalleled talent and luck, I soon ascended to the throne of the Sword Saint at the age of a young man. What? The main character? Wrong, wrong, look at that blond narcissist over there, he's the hero of this story. The Devil King? She retired at the beginning. As for the harem well Do you think a humanoid background like mine would have this kind of setting?! Anyway, this is the story of a disillusioned and unambitious sword saint