Hajime has short, spiky-ish brown hair with an ahoge that moves according to his emotions. Hajime's green eyes have straight lines running across his pupils, resembling a prohibition symbol. He can sometimes be short-tempered and snap at others, especially when he's tired or under pressure. Hajime seems cynical at first glance, but it would be more accurate to describe him as a realist. He is quite skeptical and tends to worry more than the other students, but his worries are usually reasonable.