Nisemono dato Tekikoku ni Tsuihousaremashita ga, Douyara Honmono Seijo wa Watashi no You Desu.

Amaryllis, known as the "Ice Saint" due to her expressionless demeanor, is framed as a fake saint by her fiancé—the Crown Prince of the Cheval Kingdom—and her stepsister, leading to her exile to the enemy nation of the Rise Kingdom. Saving Amaryllis from this desperate crisis is Victor, a man renowned as the greatest genius magician in Rise.

After witnessing Victor's overwhelming power firsthand, Amaryllis decides to become his apprentice. As she trains under Victor and spends her days in a warm and gentle environment, her homeland begins to make disturbing moves—...?