beware of the strongest man who is crazy about me

Read manhwa Beware of the Strongest Man Who is Crazy About Me / At my father's funeral, I suddenly recalled that this world is from a novel. Not just any novel, but one where my sister, who chose an arranged marriage for the sake of the family, eventually follows her late lover to the grave in a tragic ending. There's no way I can let my beloved sister face such an absurd fate."I'll twist the original plot and give her a happy ending!"To stop her marriage, I disguised myself as a man and went to the knights' order to meet the only person who could convince herthe male lead of the original story. But when I arrived, the male lead was nowhere to be found"Let's see each other often from now on."Instead, a crazy duke was waiting for me.