This sphere wreathed in blue flames was, in essence, Chaldeas. It was also the Noble Phantasm, "The End of Human Order That Has Already Passed."
And it was operating at maximum magical output. If the power contained within detonated, it would be equivalent to one planet crashing into another, destroying the entire Earth.
The solution was simple: extinguish the raging flames.
For now, the flames could still be put out. But extinguishing them would also mean Chaldeas falling permanently dormant.
The billions of humans sealed within it, those who had been displaced, would never be able to return. It would effectively mean killing billions of people.
Conversely, if they left it alone, then once Chaldeas fully detonated, the Bleached Earth that had been substituted would be completely destroyed.
The billions of sealed humans, on the other hand, would be released from their seal and return to the original Earth.
But the price would be the humans still alive on the Bleached Earth. They would die in the explosion.
Even hiding in the Imaginary Number Sea would not let them escape this blast. So long as they remained on the surface side of the world, there was nowhere to hide.
As they watched Chaldeas burn fiercely, they estimated that its magical energy fluctuations would peak in two hours. At that point, it would detonate completely.
No wonder Chaldeas had said, "I will kill even more people." This was the moment when they had no choice but to make a decision.
Would they kill billions to save tens of thousands, or kill tens of thousands to save billions?
If it were Kiritsugu Emiya or Shirou Emiya, they would undoubtedly choose the latter. In their eyes, numbers meant everything.
But in truth, very few people could truly sacrifice themselves for others.
The crisis