Ultraman X: Radio Silence

After fighting the powered up Gua Spectre as Reiga, Ultraman X has gone off on his own path with Daichi, much like the rest of the New Generation Heroes. They have fought various enemies, different threats, all with help. But now, they're all alone with only their Cyber Cards. Xio is the only one there to back them up, but the other Ultras who had assisted them in their journey aren't. The Absolutian threat has worn the resources of the Ultra Heroes critically thin, and although their threat is over for now, there are other dangerous villains who are willing to take advantage of this instability caused all over the multiverse...

(Takes place after Ultra Galaxy Fight: The Destined Crossroad and before Ultraman Decker, and 10 years after the Ultraman X movie.)