After a past betrayal left her emotionally guarded, Ito-san maintains a polite, professional facade while working as a housekeeper for Toyama-san. Frustrated by her constant smiles and perceived lack of genuine emotion, Toyama-san confesses his deep love for her, revealing that he hired her specifically to find a way into her heart. Overcoming the threat of an arranged marriage, the two finally express their true feelings for one another, transforming their professional relationship into a passionate romance.