Tekikoku de Reiguu sareta Koujo-sama wa Otto no Ai ni Kizukanai

Princess Mira of the Casparia Empire married into the rival kingdom of Edelgard as part of a peace agreement, enduring mistreatment throughout their marriage. After her homeland is destroyed and she is forced to divorce, she is about to return her wedding ring to her husband, Prince Klaus, on their separation day when she unexpectedly time-travels back to their wedding. Determined to find a way to save her country, she begins to discover new aspects of her husband’s character.