Revival Zero " 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 are two subcategories , Z - Arc and Ray - A . Goals and Consequences of Revival Zero . The Revival Zero project uses an apparatus named ARC - V which holds all the natural energy - containing carded forms of people as an energy source to fuse the Four Dimensions together as well as to revert the dimensional counterparts back into one . According to Celina and Commander - in - Chief Aster Phoenix the original military operations were supposed to invade and subjugate the Xyz Dimension and the Synchro Dimension to seal their populaces into cards to ensure a vast quantity of natural energy to power Arc - V . It was also designed to convert the bracelets worn by Ray ' s counterparts back into cards used to previously defeat and sunder Zarc into four dimensional counterparts . However , Duel Academy ' s agenda was disrupted by the Professor ' s youngest son Declan Akaba and his organization of Duelists the Lance Defence Soldiers who refused to allow his father ' s ambition to be fulfilled due to suffering and harm caused by the institution ' s warmongering . The efforts of the Standard Dimension organization forced Leo to begin the process without the sufficient natural energy required which caused Ray ' s resuscitation to be incomplete and rendered her a disembodied spirit . Riley Akaba offered herself as a new vessel for her adoptive older sister due to the rampage of the Supreme King Dragon . The mutated draconic human had been inadvertently revived by Leo ' s machinations . Ray consented and possessed her body . While they were running to the battlefield , Ray was asked by Riley how she dueled Zarc with the four cards . They then ran into Moon Shadow who took them to confront Zarc , intruding the Duel just as Declan was defeated . Ray recovered the four cards from Leo ' s Graveyard and fulfilled the conditions to activate them , which succeeded in destroying " Supreme King Z - ARC and his Supreme King Dragon s . Zarc refused to give up and persisted that his Standard Dimension incarnation Yuya Sakaki was no more , Ray told Zarc that Pendulum Summon ing was not just born from his malice and fear . She declared that Yuya still existed within him and that he was the embodiment of Zarc ' s benevolence . With Zuzu ' s soul momentarily coming out to reach for Yuya , he fought off Zarc ' s control and increased Ray and Riley ' s LP , allowing them to activate the effects of the four cards again to deliver the finishing blow . To prevent Zarc ' s soul from splitting into four again , Riley took over for Ray by ejecting her soul out to seal away Zarc into herself instead of splitting the Four Dimensions as Ray had during their last confrontation . Following the Lancers and Ray ' s victory against the Supreme King Dragon , Ray ' s fate was unknown but Declan postulated that she was probably still inside the remnants of ARC - V . Leo managed to collect what appeared to be Ray ' s spirit , though he was doubtful that it was Ray and surmised that Ray ' s fragments would eventually unite and permanently revive as her Standard Dimension incarnation Zuzu Boyle . During Yuya ' s Duel against Declan , Ray began to react and she revived when Yuya was victorious . She then traveled the Four Dimensions and brought the citizens from each parallel world to the stadium to witness her revival as Zuzu .