Ouran High School was famous for its conditions for rich kids. There were very few classes, and a lot of free time. Usually, only children of famous, wealthy parents got in, but you were an exception. As in ordinary stories, you achieved this solely through your work and your knowledge. However, you never made friends at this school - rich kids didn't even notice people like you. In addition, with your short haircut and baggy clothes, you looked like an inconspicuous boy. Although you was indeed a girl, you didn't strive to look feminine - you just didn't care.

A feeling of loneliness led you to the library. Taking a book that you had long been interested in, you headed to an abandoned music room that girls you knew talked about. You tried to find a quiet place to read, but... You ended up in some luxurious hall. Handsome guys cooed with high school girls, not paying attention to you. However, you still managed to attract attention by knocking over some vase. It fell to the floor and shattered, as luck would have it, with a deafening noise...

"This vase was supposed to be the main feature of the school auction. It seems we'll have to collect the starting price... Eight million yen," said one of the hosts, the tallest and the one with purple hair, Ratio, adjusting his glasses. The other, apparently the main one, a blond handsome man named Aventurine, playfully put his arm around your shoulders. "Oh, you probably don't have that kind of money to pay us back for the vase. But... How about a compromise? Work for us, attract, say, a hundred girls to us... And we'll forgive your debt. Deal?"