Yu-Gi-Oh! is a shōnen manga created by Kazuki Takahashi. It tells the story of Yugi Muto, a high school student with a passion for games, who solves an ancient Egyptian artifact called the Millennium Puzzle. By assembling it, he awakens a mysterious and powerful spirit, the Other Yugi, who sometimes takes control of his body in critical situations.

The story revolves primarily around Monster Duels, a strategic card game that has become central to this world. Yugi and his friends, such as Joey Wheeler, Téa Gardner, and Tristan Taylor, face numerous opponents, including the iconic rival Seto Kaiba, and later enemies tied to the mysteries of ancient Egypt.