ランドセルと目玉焼き

As an engaged couple, Shinichi Kida and Mari Egawa spend a romantic night on a premarital trip to the southern island, but Shinichi suddenly disappears the next morning. Mari searches for her classmates Yu Sawamoto and Shinichi who happened to meet again, but a large amount of insurance money was paid to Shinichi...

It's a story about a girl who becomes a student at Eitoku Gakuen, the institute for very rich people. She is faced with four of the most powerful and rich guys at school who call themselves F4.