He had entered the Yasui family when he was still young, and would eventually be promoted to 7 dan on December 24, 1848. Unlike many strong players of his time, Ota never once competed in the castle games.
He joined the Yasui family at a young age and was later elevated to 7 dan on December 24, 1848. Unlike many skilled players of his era, Ota never participated in the castle games.