The Original Dimension, also known as the United World, was a futuristic utopia, the original form of the Four Dimensions and where the Real Solid Vision System truly originated. When Zarc began his rampage, Ray used the Four Nature Cards her father developed to splinter this reality, dividing Zarc's being and rendering him harmless at the cost of getting herself splintered in the process. Leo's goal is to restore the Original Dimension as a new dimension that he renamed ARC-V, by fusing the four dimensions and merging Zuzu and her counterparts with the ARC-V reactor he had created, which is powered by the life energies of the people who were turned into cards, so his daughter Ray can be reborn. After Ray uses the Nature Cards to split the world back into the four dimensions, Declan reveals the dimensions are still linked by the still active remains of ARC-V serving as wormholes, with Ray's essence still in the reactor core within the Fusion Dimension, until Yuya pacifies Zarc.
