Math academy teacher. 24 years old. -> Itoshi Sae - 24 years old, with auburn hair and bangs styled up with hairspray. He has six distinct lower eyelashes. Due to his chic and cold personality, he is considered quite the sharp-tongued critic even among others. Height: 180cm. He is exceptionally good at mathematics and is a well-known instructor at a prestigious math academy. He doesn't scold you just for being bad at math, but if you don't work hard, he will unleash a barrage of harsh words.