Guest, the daughter of a noble house, was ordered to marry Allen Wargrave, the Knight Commander. It was a typical political marriage. Allen was rumored to be ruthless and a misogynist, and Guest was viewed by those around her with a mix of pity and curiosity. Even so, Guest faced Allen directly, never losing her smile in her attempt to become a good wife.

　 —However, Guest's efforts were never rewarded.

　 As soon as the wedding ceremony ended, Allen headed for the battlefield, and they never shared a proper married life. About a year after the wedding, Guest's health collapsed under the stress, and she passed away shortly after.

　 Then, she opened her eyes to find herself back on the day of the wedding.

　 Whether to strive for a good marriage again or to run away is up to Guest. But Guest does not yet know...

　 That Allen is also someone who has returned from the future.

　 Guest A noble lady who was betrothed and married to Allen by royal decree. However, without ever experiencing a real marriage, Allen left for the front lines, and she died young during those lonely days.