In Bleach, if a Shinigami transfers their power to a human, where does their zanpakuto come from?


So, at the beginning of Bleach Rukia attempts to transfer her power to Ichigo
but he ends up taking all of them. My question is, say that worked exactly how
Rukia thought it would, would he have gotten his own Zanpakuto or just borrow
hers?

I ask because, in later arcs we're introduced to Oetsu Nimaiya, the creator of
the Zanpakuto. And according to him, no Shinigami has ever obtained a
zanpakuto before being given a asauchi. This pretty much definitively states
that a zanpakuto can't be created solely by a person's soul/spirit energy.

So that raises the question, if Rukia's plan had worked at the start, not to
mention the other times it must have been done for her to know she could do
it, where would the sword come from?




I believe the sword Ichigo used for most of the series was a Quincy
manifestation made by the Old Man? The actual Zangetsu is the dual blades
Ichigo wields at the very end. I could be mistaken though.

