Well, they might go on an adventure to discover new jutsus. Sasuke could be on a mission to learn more about his clan's secrets and takes Naruto along for the ride because he knows Naruto's strength. Maybe they'll encounter powerful enemies and have to rely on each other to survive.
Sasuke's reaction could be complex. At first, he would be enraged. After all, the Rinnegan is a symbol of his power and his journey to gain strength. However, he might also have some mixed feelings. He and Naruto have a deep bond, and he might wonder if Naruto had a good reason for taking it. But overall, his initial reaction would likely be one of fury and a desire to get his power back.
One possible plotline could be that Naruto gets seriously injured during a mission. Sasuke and Sakura, with their combined skills, take him in and nurse him back to health. They might have to deal with Naruto's stubbornness when it comes to resting and following medical advice. Sakura could use her medical knowledge, while Sasuke could provide protection and also train Naruto in new techniques once he's recovered a bit, strengthening their bond as friends.
There could be moments of frustration for Naruto, especially when Sasuke is fussy or won't do what Naruto wants him to. But Naruto's love for Sasuke would override that. Emotionally, Naruto would be pouring all his love into taking care of Sasuke, trying to give him the family he never had. And Sasuke, even as a baby, might show signs of his future strong - willed self, which could both amuse and challenge Naruto.
If Naruto were to take Nagato's eyes in fanfiction, it would be a game - changer. Naruto is known for his strong will and determination. With the addition of Nagato's eyes, he could potentially use the Rinnegan's powers in ways that Nagato never did. He could combine his own Uzumaki chakra with the power of the eyes to perform new and unheard - of jutsu. This could also create a new dynamic in the story, as Naruto would now have to face new enemies who are interested in his newfound power, while also trying to uphold his values of friendship and peace.
In a fanfic where Naruto takes Nagato's eyes, he might gain new and powerful abilities. For example, he could potentially access the Rinnegan's powers more directly. This could make him even stronger in combat, perhaps allowing him to use abilities like the Six Paths Techniques with greater ease. It could also change his relationships with other characters. Some might be in awe of his new power, while others could be afraid or jealous.
In fanfiction, if Naruto takes Madara's eyes, he might gain incredible new powers. For example, he could potentially combine the power of the Sharingan or the Rinnegan with his own Sage Mode. This could make him an even more formidable opponent, able to predict attacks more accurately and use powerful genjutsu.
Well, it could lead to a major shift in the power balance among the characters. Sasuke would be weakened without his Rinnegan, and Naruto would have to deal with the new power. There might also be some internal conflict within Naruto as he tries to come to terms with using Sasuke's power. Maybe he would feel guilty at first, but then realize it's for the greater good. Also, other characters like Kakashi or Sakura might have different reactions. Kakashi could be worried about Naruto being corrupted by the power, while Sakura might be more concerned about Sasuke's well - being without his most powerful ability.
Taking care of Naruto might make Sakura more empathetic. She has to understand Naruto's pain and needs, which could make her a better ninja overall. As for Sasuke, it could break down some of his walls. He has to be vulnerable in front of Naruto and Sakura, showing that he's not just the aloof and brooding ninja. This experience might also make him more open to the idea of relying on others and being part of a team again.
One possibility is that Naruto would be extremely clumsy at first. He's not exactly the most domestic type. But his determination to take care of Sasuke would shine through. He might struggle with things like changing diapers or getting Sasuke to eat. However, as time passes, he would start to get the hang of it and form a really strong bond with baby Sasuke.