reunites with Kunihiko Maeda, a man who aided her in Parasite Eve, to resolve the entire mystery behind the appearance of the Babel, Twisted and High Ones. Aya eventually discovers that Bohr is himself a High One. Bohr masterminded the death of other High Ones in order to form the Grand Babel, which functions like a giant Overdive system. Bohr seeks to dive back in the past to Time Zero, the point where events were set in motion, to fulfill his plan for the survival of his own species from a time war cycle between humans, the Twisted, and the High Ones. Aya battles Bohr and is pulled with him into Time Zero, where she discovers the truth. In 2010 at St. Thomson's Cathedral, Aya and Kyle were going to be married. The Cathedral was attacked by a SWAT team and Aya was killed. Eve attempted to save Aya by sending her consciousness into Aya's body, creating the Overdive ability. The event caused Aya's consciousness to separate from her body and fragment through time to create the Twisted, Eve's consciousness became trapped in Aya's body while parts of Eve's body were transplanted into the people close to them creating the High Ones. The "Aya" of the main story is in fact Eve in Aya's body. After these revelations, Eve returns to her body and is asked by Bohr to assimilate him and trigger the birth of a new species. Eve refuses, and when Bohr tries to force the process, a reborn Aya shoots him to death. Aya then reveals that to avert the birth of the Twisted and High Ones, the sources (Aya and Eve) must be removed. Expressing her regret of not being able to marry Kyle, she tells Eve to shoot her. In a fit of emotion, Eve switches bodies with Aya before shooting her, creating a new timeline where Eve's body and Aya's consciousness do not exist, erasing the game's events. Though Eve offers to marry Kyle, he refuses and hints that he is going to find Aya. In a post-credits sequence four years after the game's events, Eve is walking the streets of New York and is wished a "Happy Fourth Birthday" by a woman resembling Aya. Development Concepts for a third installment in the Parasite Eve video game series had been around for some time. As work was being finished on Crisis Core: Final Fantasy