Koi to Himitsu no Gakuseiryou

From Baka-Updates: In Asahi's school, there's two tipes of students: the ones from the elite class and the average one. After an accident in her house, she starts living in the rooms of the elite class but no one must know, or else she would be expelled. A black hair guy from the elite discovers her secret, what's going to happen to her?