Board Thread:Questions and Answers/@comment-25199543-20140719134821/@comment-44061-20140720145521

Then the burden of proof is on you. This site goes by what can be referenced in this instance it would stand that Kenpachi is to be believed because kubo is not insinuating a lack of knowledge on kenpachi's part when it comes to the idea of sealing a zanpakuto. He specifically references sealing in his explanation other then saying, idk. Asauchi are just general katana and become what the wielder imprints upon them. Recently as also stated early on knowing the name is a whole different thing, its the difference between having a true shikai or bankai. Its the difference in power. Also you can release a zanpakuto simply by having a over abundance of power that uncontrollable. This was first made evident before Ichigo even knew zanpakuto have names. Further explained via renji and isshin detailing the size is controllable. In all of bleach there has been no instance of a zanpakuto outside of ichigo and zaraki that hasnt been sheathed or sealed as a Katana, Wakazashi, Tanto or Nodachi.