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Well this is something I didn't expect. A magic/fantasy manga that actually incorporates our current understanding of physics. Heck they're even hinting at string theory (the golden vibrating ring in his dreams), and stuff like quantum fields/quantum foam. As someone who has some understanding of this stuff, I'm loving it. :P Since electrons were mentioned I wonder if they'll also touch upon other fundamental particles like quarks, neutrinos, bosons, and gluons.
But yea for anyone who's into physics they should have recognized the string from string theory. It's still a hypothesis (an unproven option, not an actual theory so far), but it's an interesting attempt at a theory of everything. (merging quantum mechanics and general relativity into one theory.)