A slender kid and built for running. He stands at the height of 5'7" (170 cm) and 140 lbs. (63.5 kg). He has dark hair and eyes but, has the remnants of a distant past blond dyeing of his hair. Yu sometimes wears glasses but, he mostly prefers contacts. When he does wear glasses, they are thin with a dark frame surrounding the oval lenses with a light darkened tint to them. Yu wears a a lot of combinations of dark clothes but, his favorite is a white "One Piece" shirt under a black, button-up shirt.