Sai is a young man of moderate muscular and scrawnier than most. He has mid-length dark hair that is extremely messy, slightly wavy, and frizzing out at all angles. His hair is mostly pushed towards the right side, away from his left eye. His eyes are almond-shaped. His outfit consists of a plain white shirt with a stiff popped collar, and short sleeves with the bottoms cuffed. It is laced in the front with ribbon, creating three X's. His pants are a solid black and have a slight flare.