Someone not Naruto - but his age - becomes Hokage, and circumstances follow to bring back our original situation, only... somewhat reversed. A one-shot in three pieces, total 1,250 words.
Two: Elders meddle and there's nothing to be done. 375 words.
Kyuubi
His wife was in labor but Sasuke was more concerned about the fires started by Naruto's latest defense of the village from an timed when a neighboring country that hadn't done its research thought he'd be vulnerable when the great elder came to him and told him to seal the kyuubi again. It was getting out of hand, too likely to break free from its vessel, or turn it completely to its side. Sasuke was disgusted, and refused.
"You would deprive his children of their father?" he asked.
"Their mother will see to them," the elder replied, unconcerned.
"And if she should die? She is still recovering from her most recent birth, and doesn't seem at all stable."
"Really, Hokage, we do have orphanages. Why be so concerned?"
Sasuke shook his head and turned away.
"You will do it," the great elder said, and spoke the word of command that had been the eventual counter to Orochimaru's cursed seal. "You will seal the kyuubi," he said again, reinforcing the command. Sasuke could not resist against that, and he slumped, glaring hatefully at the man, who allowed himself a slight, valedictory smile and chuckle.
"After all," he continued, "We do not ask that you sacrifice yourself. Once the deed is done you can continue as you like. I don't doubt you'll bring great honor to this village."
"You don't understand," Sasuke said. "You never could. I first died for him when we were twelve." But he had no choice, even less than he did about becoming Rokudaime Hokage, and so he found Naruto and held him close.
"What is it?" Naruto asked.
"I've been ordered to seal you," Sasuke said. "He used the word."
"I see," Naruto said, then tried to grin. "Well, it's been nice knowing you! Do you want me to fight?"
Sasuke shook his head. "No, I'm not leaving you again. The bastard may make me do this, but he can't control how I do it, and my wife is in labor."
"You would do that to her? To the kid?"
"Eh, she deserves it. As for the kid… Konohamaru knows. He'll look after him, and see he blames the right guy."
And so the Sixth of Konoha sealed the Nine Tailed Fox.
end two
.: at least we'll be together when we get there :.