Charles Yoshino (芳乃 シャルル, Yoshino Sharuru) is a slightly carefree third year student in the same class as Ricca. She is Kiyotaka's cousin and is half Japanese. She is a member of the newspaper club. Kiyotaka often calls her "Lulu-nee" or "Ruru-nee". Like Ricca, Charles is a member of the student council. Kiyotaka and Charles live in the same apartment together.