Yu-Gi-Oh! is a Japanese manga series written and illustrated by Kazuki Takahashi. It was serialized in Shueisha's Weekly Shōnen Jump magazine between September 1996 and March 2004. The plot follows the story of a boy named Yugi Mutou, who solves the ancient Millennium Puzzle. Yugi awakens a gambling alter-ego or spirit within his body that solves his conflicts using various games.

Kazuo Takahashi , known professionally as Kazuki Takahashi , was a Japanese manga artist. He is best known as the author of Yu-Gi-Oh!, published in Weekly Shōnen Jump from 1996 to 2004. The manga spawned a trading card game of the same name, which holds the Guinness World Record for the best-selling trading card game of all time.