About that first part.. it's just a theory. Imagine Breaker being able to revert the supernatural "back to 0" so-to-speak is just an application of its actual power or original purpose, or at least that's how I see it. But yeah, it's hard to pinpoint what Kamijou no Touma is exactly. It's both his "own power" that controls the rest of the beings in his arm, for the most part at least (the fish eggs AKA full power Invisible Thing is still too much for him to handle as of now), and a sort of ideal or concept, and Anna was even fine with killing Touma in the hopes that KNT would emerge from his corpse... almost like a shell of some kind. I'd almost say it's Touma's Esper power, given what Touma Alter said about it "distorting quantum physics", representing subconscious regrets of Touma during the Coronzon arc, although itself is also a being that Touma "wished for", using the IT. The Dragon Shell is possibly the same sort of deal. And Aiwass is likely some sort of "guardian" of...