Paruka, Naomi, and Yukino attend a women's university. Although they seem to get along well, there is an invisible school caste system among them: Paruka is the daughter of the president of an electronics manufacturer, Naomi is the daughter of the executive director, and Yukino is the daughter of the president of a subcontracted company. In this situation, Yukino becomes engaged to Paruka's brother, Junya. From then on, everything revolves around Yukino, which doesn't sit well with Paruka, who was previously the absolute authority...
