Thread:Saris Khan/@comment-5651818-20150226233325/@comment-136273-20150228154416

One thing regarding the Choetsu that is not directly stated in the article: it is a power of its own only if the Ashin is a "primeval-type". If the Ashin is a half-Shinigami hybrid or a Shinigami that has ascended, Choetsu will be expressed directly through Zanpakuto. It's similar with an Arrancar's Resurrección or a modern Quincy's Schrift.

This means that in the case of non-primeval Ashin it is not a separate power, but a permanently upgraded form of a being's natural special ability which is expressed accordingly.