Yuu Gi Ou  

Game King!, Yu-Gi-Oh!, Yu-Gi-Oh! (Toei), Yu-Gi-Oh! First TV Series, Yu-Gi-Oh! Season 0, Yu-Gi-Oh! Zero, 遊☆戯☆王

Bullies often target individuals who appear weak or vulnerable, such as Yuugi Mutou. Anzu Mazaki, his childhood friend, stands up for him but he cannot rely on her forever. Katsuya Jonouchi and Hiroto Honda seem like good people despite causing trouble for Yuugi. He wishes for a true friend who understands him and will never betray him. Yuugi values the Millennium Puzzle, an ancient Egyptian artifact inherited from his grandfather's game shop. Solving this puzzle grants him his wish, resulting in the emergence of Yami Yuugi - a new personality with dark, twisted traits. This persona takes over Yuugis body and forces opponents into "Shadow Games" when they commit injustices against him. The stakes are high as losing these games can reveal the darkness within one's heart.

Yu☆Gi☆Oh! loosely adapts the first 59 chapters of the source manga while adding original events and characters not present in the manga.