Meeting Usui Takumi

Ray Takumi was sent to Japan after her 15th birthday to live with her brother, Usui Takumi, and finds out he is a big pervert for a girl. Ray and Usui go to school with her but since Ray keeps to herself she doesn't really know anyone but then.... she meets she school president, Misaki Ayuzawa, a places together the puzzle pieces. Will she find out what is going on between her troublemaker brother and Student Council President?