Height: 170 cm

Weight: 55 kg

Birthday: February 22nd

The protagonist of the series. As a master tactician, Yamato helps the group form plans to minimize the chances of his friends getting hurt. He prefers using brains, not strength and likes to bet with opponents using different tricks which Christiane does not admire, since he will try anything to win. He is also the tactician of the "Kazama family".