Kousuke Ochi

Another insei in the same group as Hikaru, Ochi is one of the youngest players, yet very outspoken about his ability. His bragging about his strength hides his insecurity; after each loss he is known to disappear into the restroom for long periods of time.

Akira tutors him to find out about Hikaru's current strength. Ochi is unnerved by Hikaru because Akira's obsession with him seems to suggest there is more to Hikaru than what Ochi knows. Ochi is also angry that Akira acknowledges Hikaru as a rival, but not Ochi himself.

He comes from a wealthy family, as evidenced by the number of pros that come to his household to tutor him privately in go.