[[Category: chapters]] "The Festival of Duality!!" is the fortieth chapter of the Yu-Gi-Oh! 5D's manga. This chapter was first printed November 21, 2012 in the 1/2013 issue of the V-Jump magazine. It was later reprinted in volume 5 of the tankōbon. [[Chapter summary::As Goodwin and the Skeleton Knight's past is revealed, they start the ritual to revive the Ultimate God - a battle between their chosen Duelists, Sect and Akiza.| ]]As Goodwin and the Skeleton Knight's past is revealed, they start the ritual to revive the Ultimate God - a battle between their chosen Duelists, Sect and Akiza.