Prequel: Cardfight!! Vanguard G NEXT
Diffriders referred to as “Apostles” from Planet Cray descend upon Earth. “Dragon Deity of Destruction, Gyze”, who destroys everything. The “Apostles” who envision the revival of Gyze, manipulate the power of the six “Zeroth Dragons” and invade the Earth.
(Source: Anime News Network)