Yu-Gi-Oh! R (遊☆戯☆王: R, Yūgiō Āru?) is a Japanese manga series that is a spinoff of the original Yu-Gi-Oh! franchise.
Yu-Gi-Oh! R is published in Shueisha's monthly magazine V-Jump in Japan. The manga is made by Akira Ito. Yu-Gi-Oh! R is an alternate plotline which takes place after the defeat of Marik Ishtar.
In Yu-Gi-Oh! R, the protégé' and adopted son of Maximillion Pegasus (Pegasus J. Crawford in Japanese version), Yako Tenma, decides to avenge his teacher's defeat at the hands of Yugi Mutou ("Yugi Muto" in the English anime), since Tenma sees blood next to a card, suggesting that Pegasus committed suicide after his loss. He is certain that Pegasus is dead, since the card is of his late wife, Cyndia (Cecelia Pegasus in the English anime), and Pegasus was very devoted to his wife. The blood on the card and the fact that Pegasus does not have it signifies that he has lost his lifelong dream of resurrecting his wife, and Tenma therefore assumes that he is dead. Tenma takes over KaibaCorp while Seto Kaiba is in the United States. Tenma kidnaps Anzu Mazaki (Téa Gardner in the English anime), prompting Yugi and his friend Katsuya Jonouchi (Joey Wheeler in the English anime) to face Tenma's RA Project (RA stands for "Rebirth of an Avatar") and the duel professors. Seto Kaiba and his brother Mokuba also come to the scene to rescue the company.
The series was licensed in English by Viz Media, and began publication in October 2009, which as of late 2010 is completed.