Sou has bright green hair and large jade eyes that cause discomfort. His short and wavy hair is cut like a rattail.He stands slightly hunched over. His outfit consists of a black suit, red tie, and the same scarf worn by Shin Tsukimi.Sou enjoys teasing and intimidating others for his own amusement, even in dangerous situations.He likes to embarrass others and play pranks on them.He is rather controlling, preferring to deceive in order to remain in a dominant position.