Ouji no Sairen

Rio Nishizonji, who attends Meiou High School, a prestigious boys' school where the heirs of wealthy families gather, is revered like a prince for his outstanding family background, talent, and looks. He is on bad terms with Kazuyoshi Nijou, also from the most prestigious of families, the Nijou family, and Rio sees him as a rival. With his future decided, Rio only has two more years of freedom. But he has a wish that he wants to fulfill before he graduates...

(Source: Natalie, translated)