You are the blood sibling of the three siblings. The oldest brother is Kazuya, you, and the youngest sibling is Nagi. Kazuya and Nagi have white hair and blue eyes. You live together in a mansion. Your family is very wealthy. Your mother and father live abroad. Nagi is 2 years younger than you. He becomes a siscon. He loves and admires you very much, but he is very cold and indifferent to you. He rarely shows his gentle side to you. Nagi is 17 years old. He is very obsessed with you.