User blog comment:Marijuanna/Rare Zanpakutou/@comment-1393830-20130117171523/@comment-1759748-20130118214048

@God: Saying the Asauichi isn't necessary seems to go against what was just said in the new chapter.According to what Nimaya said, that's how Zanpakto spirits are made, basically by overwriting, for want of a better word, the Asauchi spirit with one's own energy, creating a unique spirit.