Originally, Teruhiko looked down on the rest of the class 1-D and is not athletic at all. Later on, he accepts what he is missing and tries to help two certain students study for a test. He does not like his first name Teruhiko, given to him by his mother who left their family. He prefers the name his father gave him: Keisei (啓誠, Keisei). He is rather dull when it comes to romance since he never experienced such a thing. For him, romance is just some "vulgar world things". He is also seems to be a type of guy that easily loses his temper, such when he met Sakayanagi and declared that his class is going to win, and when he found out about Kiyotaka's true ability with the fact that he's hiding he's true ability. "Hm?"