oh he kills noel for resembling saya (his dead little sister), and he goes axe-crazy when anything ragna related comes up--this is just following 'calamity trigger' knowledge, not info from 'continuum shift' (the sequel)--though continuum shift is the one that reveals that hakumen is jin after he goes back in time through the portal (in the end of his story mode in the first game) by following ragna and nu--who subsequently combine to form the "black beast" which was defeated by the 'six heros' (which includes taokaka's ancestor and hakumen) and all of this was brought about by rachel BECAUSE SHE WAS BORED--and now everyone's stuck in a 110-year timeloop.