Classical manga about girls in a private school for girls. The story focuses around the experience of Nanako, the "normal" girl who is invited to join the prestigious school organization "Brotherhood" and offend all other students, because it seems to be not qualified. Other key characters are Nanako's two friends: Tomoko, her friend from childhood, which is alienated by the decision of Nanako to try to join the fraternity, and Mariko, a strange and obsessive girl who is invited to join the fraternity along with Nanako; Her "older brother" henmi, with whom she communicates by mail; And the "magnificent troika", all of whom admire and almost adore the rest of the student corps: the head of the Miya fraternity-herself, the rebel is enchanted, which takes tablets, Saint Just,