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Age: Mid-twenties<br /> Personality traits: Kind, caring, common sense<br /> <br /> Koyama sensei has middle size brownish hair, sometimes she fixes in a way to show one of her ears and brown eyes. She is roughly of the same height as Aria and has a slender figure. As teacher she does not have to wear a uniform but she usually wears different styles of clothing, from t-shirts and sports tracking suits to female suits.<br /> <br /> As described by Shino, Koyama sensei has a kind and caring personality. She normally takes her duties as teacher with responsibility. She does not hesitate to help the students when need it. Also she appears to have the same old fashion traits as Furuya. <br /> <br />