User blog comment:Silver-Haired Seireitou/Sake Time with Sei - Parade of Babelicious Zanpakutō/@comment-108.240.65.203-20140603222947

I always thought after this was revealed. That his zanpakutos are kind of like .....foundation blank canvases. That are colored in by the owners reiyoku. I thought he made them, with ancient reishi techniques he made and perfected. That became a fundamental part of what makes a Shinigami. Like how ichigo (zanpakuto) was just a manifestation of his power. But lacked a true foundation canvas. And just piggyback off Rukia's power, and the inherited power from his father mother and the hollow white to obtain a form. So he understands even a fake zanpakuto, as it still has the Shinigami aspect. Again theory, it's Td5 btw.