At the start of the story, Yuuichi appears to be a diligent and happy student, who works hard so he can join his friends on the school field trip. He values ​​a lot your friends throughout history. He shows kindness and a willingness to sacrifice himself for the good of his friends, going so far as to label himself a traitor to avoid further discord. As the story progresses and the games become more and more serious, however, Yuuichi begins to show a much more sinister side.