Hikaru no Go (ヒカルの碁, lit. Hikaru's Go) is a Japanese manga series based on the board game Go, written by Yumi Hotta and illustrated by Takeshi Obata. The production of the series' Go games was supervised by Go professional Yukari Umezawa. It was serialized in Shueisha's Weekly Shōnen Jump from 1998 to 2003, with its chapters collected into 23 tankōbon volumes. The story follows Hikaru, who discovers a Go board in his grandfather's attic one day. The object turns out to be haunted by a ghost named Sai, the emperor's former Go teacher in the Heian era. Sai finds himself trapped in Hikaru's mind and tells him which moves to play against opponents, astonishing onlookers with the boy's apparent level of skill at the game.
小学6年生の進藤ヒカルはある日、祖父の家で古い碁盤を発見。その碁盤に宿る平安時代の天才棋士・藤原佐為の霊と出会う。それまで囲碁にまったく興味のなかったヒカル。しかし、佐為の魂がヒカルの意識に入り込み、ヒカルは碁の魅力に惹かれてゆくのだった。
