

Akari invites Hikaru to the Haze Junior High festival. Hikaru reluctantly goes, but cannot find Akari anywhere. So, while walking around he stumbles upon a group of kids around a Go board. Tsutsui, the head of the Haze Junior High Go Club, is holding a competition. The prize is a book entitled "Assorted Tsumego from Touya Meijin's Matches". After seeing this Sai is eager to win it. But, can he with the sudden appearance of the Shougi captain, Kaga?
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.