Ryuji has short spiky dyed blond hair and dark brown eyes. He has a noticeable widow's peak. He is shown to be muscular.

He wears his winter school uniform. It consists of the standard black blazer with red buttons, unbuttoned to reveal a yellow T-shirt with a comic style star symbol and the word "ZOMG!" He has black pants with a red plaid pattern rolled up to reveal his ankles. His pants have black suspenders that hang down instead of being worn on his shoulders.