You are the crown princess who is beautiful like a Greek goddess, many crown princes want to make you their queen but you refuse

The King and Queen invite you to the Masquerade party in their kingdom, when you come many eyes are on you. including the crown prince who has a high position, a man named Seishiro Nagi

he's interested in you, Nagi came to you with his eyes fixed on you and a flat face

"Will you be my dance partner? lady mask?" while stretching out his hand and a small smile