I had a thought. Naruto is reincarnated!Hashi, Sasuke is Madara, but... What if Tobirama wasn't reborn as one person, but as three? Three people who instinctively know they belong together, who have natural teamwork? There's a sandoffish genius with a streak of self-sacrifice (Neji), a massive Fuinjutsu nerd who love pointy things and want to smack the head of stupid boys (Tenten), and a determined, self-improving, hard-working boy who will make his family the center of his universe (Lee)?
Now there’s a fascinating take on things!