Tokyo, 1921—A time when love was a luxury and marriage required approval. Fuki, a 24-year-old maid abandoned by her former fiancé, has resigned herself to a quiet life of servitude. But everything changes when Yugo Tachibana, the elite heir of the household and a student bound for Imperial First High School, returns and proposes a sudden, unconventional marriage. Ordered to find a bride and bound by duty, Yugo offers Fuki a way out—but at what cost? Across class lines and societal expectations, a fragile new life begins, teetering between obligation and something deeper.