From Tokyopop:
Young Mikan runs away to Tokyo to follow her best friend, Hotaru, who has been enrolled in an exclusive, secretive private school for geniuses. But it turns out that Alice Academy is a lot more than meets the eye. If Mikan wants to stay by Hotaru's side, she has to both pass the strange "entrance exam" and face the even greater challenge of befriending her very odd new classmates. Whether it's Hotaru's gift for inventing gadgets, the cranky Natsume's fire-casting ability, or Professor Narumi's control of human pheromones, everyone at the school has some sort of special talent. But what ability, if any, does Mikan possess? Mikan is going to have to rely on her courage and spunk if she's going to stay in school, or even stay alive!

Alice Academy is a famous school exclusive for children with an Alice, children with special powers. It's affiliate music school, the Alice Academy Opera Troupe, now opens up to regular students as well.

Andou Hikari's brother has an Alice and is a student of the Alice Academy. She decides to enroll to the school. There she is paired up with Shinomiya Ema, a student with a secret...

Mitsuru is beautiful, graceful and admired by many people, but she has a weird problem--a single, violent movement against her can get her begging sweetly for more! Her nickname M, also stands for masochistic. Natsuhiko, is a guy who found out Mitsuru's secret on their first day of senior high school. Even so, he has an equally bad problem--the mere glimpse of his reflection can send him into a flying fit about how beautiful he is! He is nicknamed as N for narcissistic. They both hope to minimize their chances of being exposed because of their weird behaviours. (Source: M-U)