Omoimoyoranai Shinsou

Omoimoyoranai Shinsou is a Zanpakuto release exclusive to souls whom have Kami and Megami blood in them. The more blood they have, the stronger they'll be, (not a rule, but a guideline), but they have to have at least fifty precent in order to possess it at all. It unleashes the true power of their Zanpakuto, their entire physical form changing drastically, and is said to give many Kami and Megami power that rivals the Gods that reside in Nirvana. Because of this it is forbidden to use Omoimoyoranai Shinsou unless special permission is given directly from the Sprit King himself, or beings higher than even him.