"Revival Zero" or "Reversal Zero" (リバイバル・ゼロ Ribaibaru Zero) is the name of the initiative devised by Leo Akaba to reuniting the Original Dimension. It is the primary objective of the Arc Project and the key to resuscitating his first born daughter Ray Akaba by fusing her dimensional counterparts. Yuya and his counterparts are also a factor in stopping the resurrection of their original counterpart, Zarc. Within this project is two subcategories, Z-Arc and Ray-A.