Yūichi Jin: Kei and Yūichi have a similiar way of thinking. They understand each other. Tachikawa thinks of Jin as a rival and looks forward to fighting with him to see who is the best attacker in Border. When he is not fighting he is quite friendly towards Jin. Kōhei Izumi: Shūji Miwa: Shūji dislikes Kei, because he is similar to Yūichi. Sōya Kazama: