Hinagiku Katsura

Hinagiku Katsura is an all rounder student and the current student council president of Hakuo Academy. She is also captain of the kendo club and an unofficial school idol who garners fans from both genders at Hakuo Academy, the school that Nagi, Isumi, Wataru, and eventually Hayate attends. Before Hinagiku's sixth birthday, she and her sister were abandoned by their biological parents who had left them with a debt of 80 million yen. Following this her sister, Yukiji, managed to pay off the debt albeit through rather dubious means. After that the two of them went to live with the Katsura family...