Board Thread:General Discussion/@comment-26475399-20151228215405/@comment-26475399-20151230025818

Kaestal wrote: Isshin probably just learned it from Engetsu while he was a captain, it is most likely a Getsu blade technique that is passed on through the family like getsuga tensho.

That too is something i've thought of, hahah. Engetsu could have taught Isshin, rather than Isshin creating something on his own. But i wasn't really sure if Zanpakuto spirits had the ability to suggest and perform such performances that are different than other Shinigami. Though, it's still not a stretch. I can see your suggestion still being a possibility.

There's also the fact, however, that Isshin stated that their Zanpakuto don't wanna teach them this move. So for Engetsu to mention it as a unique ability, then to play hard-to-get over teaching it... just seems like a troll move, hahahah.