10-kai Konyaku Haki sareta Watashi ga Reitetsu Koushaku-sama ni Dekiai sareru nante Wana desu ka?

"That's strange... I'm trying my best to act ladylike, so why is everyone running away?" Since her engagement to the Earl's son was broken off, Charlotte, the daughter of an Earl, has had her engagement broken off 10 times in a row. Despite her bitter feelings, she attends her ex-fiancé Hake's wedding, only to be proposed to by Leonhardt, the prime minister of a neighboring country who is rumored to be cold-hearted. She's the only one who can move my emotions! An incredible love comedy about a tomboyish young lady who has been unsuccessful in her search for husband and a ruthless and heartless(?) duke! (Source: Comic Ride, translated)