User blog comment:Soulreaper1234/Who should fittingly kills Aizen in the end?/@comment-1351982-20100607044226

Unohana probably will kick some a** in the next arc, but other than Aizen betraying soul society she does not really have a personal grudge against Aizen, so it would completely out of character for her and plot wise it would make no f*#king sense.