Kaguya

This I-Chu comes from a distinguished family, as he's the son of a politician. Accomplished in about anything, he can play the violin, the piano, knows horse riding and even the Japanese Tea Ceremony. He was raised in a strict house, so he's calm, well-mannered and hard-working. However, he isn't straight-laced one bit, and doesn't let prejudices or common laws get to him when making decisions. He does everything out of his free will. Nonetheless, he keeps his idol activities a secret from his parents.

(Source: Etoile Stage Wiki)