Seiji Ogata

As a highly skilled 9-dan professional and protégé of Touya Kouyo, this ambitious Go player played a pivotal role in fueling the legendary rivalry between Hikaru and Akira. Initially captivated by Hikaru’s hidden brilliance, he later became obsessed with challenging the mysterious Sai. After ascending to the top of the Japanese Go scene, he secured both the Gosei and Judan titles following his master's retirement, and he now aggressively pursues the Honinbo title held by his rival, Kuwabara.