Saionji Hiyoko

Don't let Hiyoko's childlike appearance and voice fool you; she is definitely a high school student.
Though she's only in the beginning stages of her professional dancing career, the Japanese dance industry already has high hopes for the Ultimate Traditional Dancer. She has already performed overseas numerous times, and her popularity among younger audiences makes her a rarity in the dancing community. Then again, her fans are mostly with "unique" tastes in entertainment, so that may be skewing her popularity somewhat.
Despite her cute appearance, most people are unaware of Hiyoko's capacity for cruelty.