The fourth series and third spin-off of the Yu-Gi-Oh! anime and manga series. As with the previous series, it focused on the new type of monsters: Xyz monster.
Set in an entirely different univerese from the firstthreeseries. The series follows Tsukumo Yuma, a boy who is initially known as "the master of absolutely losing" for being bad at everything (including Duel Monster). After his encounter with Astral, a powerful entity from the Astral world, Yuma is entrusted with a power of Number 39 Utopia, and were tasked to find all of the 100 "Number" Xyz monsters to save both of the Astral and human world from the otherworldly threats.
