Kamen Rider is the axis of each world and protects each world. The rider's power, the source of that power, seems to be a mysterious power latent in those who transform into Kamen Riders. When Sougo decides to fight, the Rider's power is poured into the Blank Watch, and just like the Zi-O Ride Watch was created, it is thought that by showing the will and actions befitting a Rider, the transformer himself manifests itself.
The rider's power is what protects each world, so the world of Tsukuyomi where riders do not exist has come to a time of destruction. It is also thought that each world depends on the rider's power, and when the rider's power moves to another world, the world itself seems to move. As a result, the world of each riders may have fused with Sougo's world as Another Watch and Ridewatch with the power of riders gathered in Sougo's world. However, there were various discrepancies in this fusion, which caused the distortion of space-time. As a result, Gatack's Kagami, while still having memories of Kabuto's world where the meteorite fell in Shibuya, seems to have existed in Sougo's world where the meteorite did not fall in Shibuya.
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