The Mechanical Race... naturally immune to Mind Magic!
This is basic common sense!
Moreover, the robust support of Artificial Intelligence in technological R&D is unquestionable.
It might not be impossible, over the course of several decades, to elevate humanity's weaponry in the "Asteroid Defense System" to a level that could prevent the global trigger of the "Death Melody."
Even if the madman's doomsday still arrives, as long as Earth remains in the Mechanical Army's grasp.
Even if the population drastically decreases, with the help of Artificial Intelligence, humanity might still be able to rise again!
Since humanity can't defeat Night Demon.
Then use Magic to defeat magic!
...
A full three years.
Zero's technological security was thoroughly verified in all aspects.
Because of fundamental restrictions.
