Souya is of short stature and small build with fair skin. He has voluminous curly bright turquoise hair that matches the hues of his eyes and two silver earrings on his right earlobe. His face is constantly set in a snarl making his veins prominently show, hence his famous nickname "Angry." He wears the traditional Tokyo Manji Gang uniform when embarking on missions but always matches outfits with his brother when out on personal endeavors.