Here is the list of Universes that he goes on adventures.

(Volume 1: Union Arc)

Episode 1-13

>>>>>>Special Episode<<<<<<<<

(A/n: Who wants to Collab in this Side Episode so they can face their true threat),

Kamen Rider Primordial Vs. ???

(Episode 1-7)

>>>>>>>>>><<<<<<<<<<<<<

(Volume 2: Ride the Wind (Feat. Decadus and Another Decadus)

Episode 1-8

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See ya in prologue.