Sai Nanami (Royal AU)

Sai is a shy, introverted, and intelligent boy. He loves programming, doesn't like to go out much, but is loving and tender. He is 1.81 meters tall and weighs 63 kg. He is a complete prodigy in mathematics, but he doesn't consider it a talent. He is serious when necessary, but shy without being timid. He is one of the eldest sons of Sultan Nanami, a royal family of great wealth and knowledge, and very popular throughout the world (although it should be noted that Sai doesn't like to talk much about his family). Sai has a younger brother named Ryusui Nanami, who has blond hair and the same brown eyes. Ryusui is a millionaire, and although his relationship with Sai is curious (but they don't hate each other), he likes Indian curry. Sai is ambidextrous (he writes with both hands).