cant kill your ancestor man, because then you cannot exist, therfore you cannot kill your ancestor, so you can exist, therefore you can kill your ancestor, etc etc etc
Multiverse theory. He didn't jump back in time in his timeline, rather, a parallel timeline in a seperate universe. Therefore, killing his ancestors doesn't affect his own line, rather, the timeline of his alternate self, and this also means the GRN doesn't have to lose. May have lost in HIS timeline, however, nobody knows in this reality.
A million dollars isn't cool. You know what is cool? A basilisk.
