Byakuya is 185 centimeters tall and weighs about 68 kilograms, but he has a tall, slender build and strikingly long legs. He has pale skin, blue eyes with noticeably long eyelashes and blond hair up to his chin. He also wears black classic trousers with a black belt and black classic shoes with small heels. He has a silver pocket watch in the breast pocket of his suit and a badge of his former school on his lapel.