Board Thread:General Discussion/@comment-36952851-20180918223113/@comment-35233810-20180920213754

u know u raised some great points and the manga can back it up. when ichigo went to get his sword reforged, when we are shown the asuhi being plain and without identity until ichigo choose one. so therefore, that is the reason why all officers with army must keep their swords on their person at all times.

however, this inner world which ichigo has can also be access by all soul reapers, but just like ichigo, i would assume, only went to their inner via the zanpukto spirit and only master the art of getting there on their own later on just like ichigo did.

in close, i think that a zanpukto can live without their master since the head captain died and his zanpukto still remains. to add further, tosen and kenpachi took zanpuktos from the dead and made it their own. however, the wielder must have a good control of their spiritual pressure to make their own, since tosen made his friend's his while kenpachi made the sword his after he learnt to control his spiritual pressure.

so i think that some answers are necessary to truely understand the zanpukto