"Creation meeting creation might destroy the world; destruction meeting destruction, on the other hand, was most likely to create a new world."
"Very contradictory, but very interesting, wasn't it?"
"Wizards created Forbidden Curses, and Forbidden Curses could destroy the world. Yet when Forbidden Curses encountered one another, even the greatest contradictions seemed insignificant. For the first time, the many disagreements within the Alliance truly gave way to compromise and the search for common ground while setting aside differences."
"Beneath the shadow of destruction, everyone finally learned how to coexist."
"A terrifying presence shrouded the entire Wizarding World. Any sensible wizard knew things could not continue like this. The Grand Wizard Council convened a plenary session, inviting every Legendary Wizard and Ancient Wizard they could reach, and together they forged a pact—the Forbidden Spell Non-Proliferation Treaty—agreeing that, in order to protect our world, no organization or individual within the Alliance could conduct Dimensional Fluctuation Experiments or research new Forbidden Curses..."
Hearing this, Zheng Qing finally could not restrain himself and interrupted Mr. Wu's account. "...If that's the case, then how could I have become a Forbidden Curse, sir?! By your earlier description, even a Third Generation Forbidden Spell required nine Archwizards working together to cast it! And didn't you sign that treaty?"
Mr. Wu listened to the boy's questioning with a smile. Only after Zheng Qing fell silent did he answer slowly, "The treaty? Of course I signed it... But the highest rank it could restrict only extended to 'Ancient Wizard'... Because of my long-term research into Forbidden Curses—have I ever told you that three of the four Forbidden Curses sealed in the school were developed under my leadership?"
Zheng Qing shook his head blankly.
Mr. Wu gave an "Oh" and added, "The greatest side effect—or perhaps effect—of Forbidden Curses is