"Ten years ago, the Yondaime needed my help to stop the Kyuubi! For ten years, I've been keeping it locked away from the rest of the world!" Glares gave way to shock, worry, and nervous muttering. If anyone hadn't been paying attention before, they were now. "But despite the importance of what I do, this job sucks! Long hours, no pay or benefits, and everyone treats me like shit!" He charged up chakra into his right hand, and lifted his shirt to expose his torso - and seals - with his left hand. Tensions in the crowd increased. The ninja among them looked like they were about to jump him. Time to wrap it up.
"I quit!" he yelled, and brought his right hand to the seal.
All hell broke loose. Potent red chakra flowed rapidly from the seal, coalescing in the middle of the street. Its power could be felt throughout the village, even by the least chakra-sensitive of the villagers. Civilians were panicking and running for their lives every which way, with some forcing their way out of the village past bewildered gate-guards. Many were frozen in terror, while some of the braver ninja threw weapons and fired elemental jutsu at the building mass of chakra.
It was pure chaos.
The demon rebuilt itself in stages. At first, it was nothing more than a giant, transparent, outline which towered over most of the nearby buildings; the attacks that were being flung at it simply passed through and sailed into the sky. Deep within the outline, a core of raw power formed and began spreading inexorably outward. Only when it contacted the outline did the whole construct begin to solidify. Detailed features of the bijuu began to form, and the attacks directed at it finally managed to hit something, only to have absolutely no effect.
Fifteen seconds after Naruto triggered the release, the Kyuubi was fully restored.
This seemed to cause a spontaneous lull in the battle, as the assorted ninja tried to figure out what to do about their seemingly invincible foe, and the demon simply gazed across the landscape. Then it drew in a massive breath, and everyone except Naruto braced themselves for some kind of attack. It came as a surprise to the people of Konoha when the bijuu spoke to them.
"See you later, shitlords!" it laughed, before it bounded over the village wall and took off running at a speed no human could hope to match.