**Height:** 163 cm (5'4") Koyuki was never really confident in himself throughout the story, especially from being picked on for his effeminate looks and name. In school activities, he didn't participate in many of them due to his lack of self-confidence and his weak constitution. He does, however, enjoy reading manga, and bonded with Natsuki because of it. When it comes to love, he seems to have made peace with the fact that Natsuki liked someone else, and advises those that talk to him about love to not make the same mistakes he himself made.
