Yuu, married to a wealthy man, grows tired of her husband's idle lifestyle, squandering his father's inheritance without purpose, and becomes disillusioned with their marriage. Living under the same roof, she gradually finds herself drawn to her brother-in-law, Yuuki, captivated by his dedication and passion for work, which stirs emotions she had long suppressed. As her bond with Yuuki deepens, Yuu begins to discover a new sense of hope and desire—will this forbidden connection fulfill her longing for love and fulfillment?