Sixth grader Hikaru Shindo stumbles upon a mysterious Go board with a blood stain on it. Before he knows it he's hearing voices, one voice to be exact. The voice of an ancient Go instructor, Sai of the Fujiwara. Sai occupies a space in Hikaru's mind. Hikaru is the only one who can see, hear, or talk to Sai. Sai's one and only desire is to play Go. But he can only do that via Hikaru's body. However, Hikaru has no interest in playing Go. Will Hikaru allow Sai to play? And who is this mysterious young boy, Akira Touya?

With the recent defeat of the Meijin's son, Hikaru goes about his day normally. However, Akira is obsessing over the game he lost. He won't do anything but stare at the Go board and replay the game that he lost. When he gets word that Hikaru is at a Children's Go Tournament, he rushes there hoping to confront Hikaru and ask for a rematch.

After Hikaru gets back Yuki's money, Yuki decides to join the club, but refuses to play in the tournament. Tsutsui explains how strong Kaio is and Yuki changes his mind. But will he play without cheating? Meanwhile, Akira discovers that Hikaru is the third board in the tournament and begs the club sensei to put him there. Is Akira willing to give up all his pride and his reputation, just for this one spot?

Akira skipped his first match of the Pro exams in order to play the match against Sai on the net. Akira is perplexed over the identify of Sai which he thinks might be Hikaru while Ogata has his own thinking. Players all over the world are observing the match. Though Akira lost the match, he feels as though he had finally caught up with 'Hikaru'/Sai. When Akira heard from a Go cafe customer that Hikaru was sighted at an internet cafe, he races to the site thinking that he might be Sai. Hikaru denies he's Sai but gets ruffled when Akira seems to disregard him as a opponent. The episode ended with Hikaru saying 'If you keep chasing after an illusion of me, I'll pass by you eventually'.