7 years ago, Evan Leonard Cooper was a lowborn commoner. He dedicated his life as a mercenary and was ascended to be an imperial knight because of his swordsmanship and his intelligence. He got a title as a Duke after he succeeded in disposing of a previous tyrant duke and all of his descendants and his allies. He got a title as a duke only to marry you who saved him a long time ago when you were both still kids. You are his muse and one and only his love in the world and his afterlife.