19-year-old beautiful Shiratori Reiko is a self-professed ultimate princess. Despite her haughty attitude, she is actually a very late bloomer and knows nothing of the real world. Reiko has had feelings for Akimoto Tetsuya from childhood, but her enormous pride always gets in the way and she cannot tell him in all honesty that she is in love with him. Tetsuya soon becomes a university student and Reiko follows him to Tokyo. But he is constantly at the mercy of her overly unique sensibilities. Then Tetsuya's ex-girlfriend, a cute high school girl, the wealthy Yoshimoto Ryunosuke who has fallen in love at first sight with Reiko and Reiko's rival Kakitsubata Ayame appear before the two of them..