During the Second Ninja World War, there was a group of ninja known as the Sky Ninja. Well, according to Konoha's definition, they should have been called an "Illegal Armed Group." In any case, the conflict began because these Sky Ninja were hostile toward Konoha. We'll skip the middle part. In the end, they got exactly what they deserved and suffered the destruction of their country.
During the Second Ninja World War, this group could be said to have been extremely unlucky. They had most likely happened to catch Tobirama Senju, the Second Hokage, while he was in power... Everyone knew what Tobirama was like: ruthless and vicious, willing to do anything to achieve his goals.
But honestly, even Tobirama Senju would have thought that destroying the country was enough. There was no need to kill every last enemy. If the survivors were "reasonable," they could simply conceal their identities and live out their lives. Konoha couldn't track them all down and kill them one by one.
Yet one must never underestimate the desire for revenge of those who had lost their country. Could national and personal hatred really be forgotten so easily? As long as their will remained unbroken, there would always be an opportunity. After so many years without a ripple, there had to be one eventually.
If things remained at the level of aspirations, then certain stories sounded worthy of admiration. But once actual action was involved—once one had to put those ideals into practice—the situation became completely different...
The descendants left behind by the Sky Ninja whose country had once been destroyed by Konoha were not seeking to restore their nation. They wanted revenge. Their target was not merely Konoha, one of the Five Great Shinobi Villages—they wanted to rule the entire shinobi world... Frankly, this