Claricia, a lady whose engagement was annulled by the Prince because she was too capable. Furthermore, as a substitute for a Reward to a Hero who achieved military merits in the war, she was handed down to a lower-class noble. Her new marriage destination is poor, and her new fiancé is a Hikikomori!? ...Even in such a situation, for her, who possesses a bright personality, true education, and above all, a steel Mental, any adversity was not an obstacle. The grand advance of the lady who absolutely never gives up, splendidly begins!!