Well, perhaps in the 'naruto vs sasuke the aftermath fanfic', there could be a focus on the physical and mental recovery of both Naruto and Sasuke. Naruto, being the more positive of the two, might bounce back quickly, but Sasuke's internal struggles could be explored in depth. There could also be new threats emerging that they have to face together, which would force them to put aside their differences and cooperate, even if reluctantly at first.
In this fanfic, it's likely that the story will deal with the emotional aftermath. Naruto might be haunted by the fact that he had to fight his friend so brutally. Sasuke, on the other hand, could be grappling with his own sense of self - worth and purpose. Their friends, like Sakura and Kakashi, might play important roles in bringing them back to normalcy. For example, Sakura could be the one to help heal their wounds, both physical and emotional, while Kakashi could offer his wisdom and guidance on how to move forward from this dark chapter in their lives.
One possible plot development could be Naruto having to deal with Sasuke's relationships. For example, he'd have to interact with Sasuke's friends in a different way than Naruto would normally. He might also discover new things about Sasuke's past that even Sasuke himself was not fully aware of. And Naruto's own skills and abilities might be affected by being in Sasuke's body, leading to some interesting battles or training sessions.
One possible plot development could be that Sasuke is in a life - threatening situation, perhaps against an extremely powerful enemy. Naruto sacrifices himself to give Sasuke a chance to escape or defeat the foe. This would likely lead to Sasuke being filled with guilt and regret, and might change his whole outlook on life.
A plot development could be that Gaara and Sasuke start the fight. Sasuke tries to taunt Gaara about his past and how he could never truly understand Sakura like he does. Gaara, in response, shows his determination through his sand attacks. As the fight progresses, Sakura starts to see a side of Gaara she never knew, which makes her question her feelings for Sasuke. Meanwhile, Sasuke becomes more and more frustrated as he realizes he might be losing Sakura's attention, which makes him fight even more recklessly.
One possible plot could be a rematch at the academy where Naruto and Sasuke have a sparring session. They might be competing for the top spot in a new ninja training exercise. Naruto could be using his new jutsu that he's been secretly practicing, while Sasuke is relying on his natural talent and Sharingan. Their rivalry is intense, but in the end, they both gain a new level of respect for each other's skills.
Well, one possible outcome could be that Naruto and Sasuke manage to defeat Madara through their combined strength and newfound powers. They might use their signature jutsus in a coordinated way that Madara can't counter.
Obviously, Naruto and Sasuke are going to be the main characters. Their relationship and how it develops after their fight is likely to be the central focus of the fanfic.
Well, it could be that Naruto uses his new Sage of Six Paths powers to combat the Juubi. Maybe he has to find a way to break through the Juubi's defenses which are super strong. He might also get some help from his friends at some point in the fanfic.
A plot might involve Shukaku being controlled by an evil force and Naruto has to fight it to save the village. Naruto starts by trying to reason with Shukaku, but when that fails, he has no choice but to engage in a fierce battle. He might call upon the help of his friends like Sasuke or Sakura at some point to create a strategy to defeat Shukaku.
It could start with a rift between them that becomes unbridgeable. Sasuke might side with a group that Naruto is sworn to oppose. Their ideological differences grow to such an extent that they end up in a final battle. Naruto, with a heavy heart, kills Sasuke perhaps because Sasuke refuses to back down and his actions are endangering too many lives. This would be a tragic departure from the original story where their relationship was centered around mutual understanding and redemption.
Well, a likely plot development would be that Sasuke's new female form causes a stir in the village. Some people might be suspicious or even hostile towards her change. Naruto would then be in a position to defend Sasuke and prove that she is still the same person deep down. Also, Sasuke might start to explore different aspects of her personality that were suppressed when she was male. This could lead to her having different goals and ambitions, which would then drive the story forward as Naruto tries to support her new - found self. There could also be a plotline where an enemy takes advantage of Sasuke's transformation, and Naruto and Sasuke have to work together to defeat them.