Seeing the plans he had laid years ago come to fruition left Naruto feeling rather pleased with himself.
His reason for bringing these clan heads into his fold before Konoha's destruction was clear.
He simply wanted to remain a hands-off boss in the new world to come.
The Land of Waves was a perfect example.
If he had not supported Haku and taught him to become the Daimyo of the Land of Waves back then...
He would now have to constantly divert his attention to handling every major and minor affair there.
In other words, the Land of Waves was Naruto's trial run before unifying the shinobi world.
He was extremely satisfied with the results.
Since the test had gone well, why not continue with the plan?
Once the shinobi world was pacified, with leaders at every level publicly managing everything, wouldn't he be free to enjoy his own little life with Sasuke?
After the six clan heads left, Naruto once again turned into a space-time vortex and vanished.
When he reappeared, he was already on Kage Rock Mountain, near the Hokage Building.
Looking down over the vast expanse below, Naruto decided this was the best spot to watch the battle.
He then left a Flying Thunder God Mark at his chosen location.
After leaving the mark, Naruto activated Sage Mode again.
He closed his eyes and sensed his surroundings for a moment, then Sage Mode faded, and Naruto vanished along with it.
Before long, Naruto arrived at an inconspicuous spot in Konoha.
Looking at the unremarkable well beside him, he sealed it with Wood Release without hesitation.
"The members of Mount Myōboku had better stay away tomorrow. There's no need for needless casualties."
After sealing the passage between Konoha and Mount Myōboku, Naruto used Flying Thunder God to return