I took a couple of minutes to think about that... i truly don't think it's possible to have an answer to this question yet @_@ nothing can guide you to it without being a "human" who can think like R07... i ain't no Rword V-V so i think i need more clues from him... that is if he ever gave a clue to that question to begin with @_@ other than that 1 scene in chapter 1...