Ryō has short, brown hair and hazel eyes. He has more often than not been seen in Kasukabe's uniform under which lies a hawaiian, pink shirt.
Unlike his brother, Ryō is more mature and calm. He analyzes the situation before acting and doesn't mind being called "similar" or "completely alike" to Aoi, as seen in his and Aoi's conversation with Haruna during their game. Their personalities, however, differ.