"There are four ways to invade the Underworld."
Uchiha Yū before them could absolutely be called a master of war. Every war he launched ended in overwhelming victory, victories forged from the blood of countless people. No one doubted his ability to command a war.
Thus, when Uchiha Yū began explaining the essence of war, every ninja present focused their attention on him.
"The simplest form is military invasion."
"The second is economic plunder, exhausting the enemy's economy until they collapse without a fight."
"The third is the subversion of civilization. This is the method I have employed in the Ninja World. Technological revolution infiltrates every aspect of life, and in the end, the war is won through absolute superiority."
"As for the last one, it can be called racial replacement!"
War was fought with population and overall strength. Based on the intelligence Uchiha Yū had gathered, the Ninja World's overall power could not even be compared to that of the Underworld. The difference between them was like clouds and mud. At most, they could seize a large territory, then slowly digest it.
As each word fell on their ears, Minato Namikaze's mouth hung slightly open. This advanced form of warfare was no longer a battle between ninja, but a war without smoke or fire. Many people had already suffered under the wars Uchiha Yū had brought.
Clearly, once such a person became one of their own, it would be a disaster for their enemies.
"The most basic military invasion would cause us heavy losses. Even if we succeeded in taking them down, without sufficient resources, we would have no way to resist the Ōtsutsuki Clan. The Underworld is only a place we are temporarily invading, not our homeland. I hope all of you remember that."
He spoke slowly, yet