Board Thread:Questions and Answers/@comment-36761202-20180909203545/@comment-9051002-20200224221246

This may sound silly but Ywach is based on Zangetsu not the other way around. The thing is that Tite Kubo makes shit up as he goes, this is common for most Mangaka but Kubo took it to a new extreme. So Zangetsu is what Ichigo's Zanpakuto Spirit would and should've looked like. Hollow Ichigo was just that, his Hollow inside him, but when Kubo added the BS that Ichigo was Quincy and Ywach was inside him as Zangetsu then all this BS began. Hollow Ichigo is now a Shinigami spirit and ALSO a Hollow?! That makes 0 sense even with the contrived Aizen's modified Hollow BS that was inside his mom and is now your Shinigami/Hollow powers...wat. Zangetsu is now his Quincy powers? even tough he taught him how to find his Shinigami powers, use Bankai and all that, because apparently he can do that?

Yea it's all a cluster fuck of BS just like the rest of the Manga. Original Zangetsu is Ichigos Zanpakuto's spirit end of story.