From General to Bride: Marrying My Strongest Rival

Princess Leone of Alderia is a dedicated knight who would take armor over dress and sword over jewelry. Feared as the "Golden Lion" for her bravery, she is surprised to receive a marriage proposal from Berthold, a marshal of the enemy nation whom Leone has confronted numerous times in battle. United with the former enemy in a political marriage, Leone accepts her role with Alderia's best in mind, but through getting to know Berthold, his modest kindness touches her heart and her guard is slowly taken apart. What kind of change will this marriage bring to the two who have only known each other through battles and war? Source: MangaPlaza