Hailing from Aomori, Seina moves to Tokyo to pursue marriage prospects, dreaming of a luxurious life in a wealthy home with pets, supported by her high income exceeding 20 million yen annually. Visiting her brother's place after 20 years apart, she begins her search for a partner, only to encounter nothing but perverts who quickly deceive her and creampie her, forcing her to face a harsh reality. Amid this struggle, the caring and concerned presence of Seiya begins to stir feelings in her heart. Meanwhile, Seiya gradually finds himself drawn to Seina, developing genuine romantic emotions.