Hasumi Keito has green hair. His hair is medium-light bangs and the length of his hair reaches the nape of his neck. He had sharp green eyes. He is nearsighted, so he always wears white framed glasses. He is tall, standing at 178 cm. He is very intelligent and organized. It wouldn't be strange that he would be the class leader. But he doesn't like to hang out with anyone because he's always busy with work and the library.