User blog comment:Godisme/The Drop/@comment-3428301-20130123163423/@comment-5551986-20130123233520

I think she never knew her zanpakuto's name either, so in her heyday, she merely used her sealed zanpakuto to kill everyone, when she found out minazuki's ability to heal and save lives (in contrast to her ability to take life) she turned a new leaf to repent herself, and used hers and minazukis powers to write the wrongs shes committed, and instead of kill everyone, she will save them, shes like a born again christian who used to be a serial killer. But i think you are on to something, maybe she left because her zanpakuto wasnt a melee type or something? I think thats a theory that may explain why her little vice captain Isane was crying, knowing that unohana may become the villain she once was. Very strange cliffhanger at the end of the chapter though.