So the last we know Ywach had sealed Yama's bankai and used it against him...does he still have that or since Yama is dead so that bankai is no longer active? I mean since the shinigami is dead shouldn't the zanpakuto revert back to its original form even if it manages to stay in existence.......? and if Ywach still has that Bankai hell no one has a bloody chance in hell of even touching him even if he doesn't use his almighty......