Boruto's character development could be a complex journey. At first, he may feel overshadowed by his parents' fame and power. This could lead to him acting out or trying to prove himself in the wrong ways. However, as he experiences more of the ninja world and faces challenges, he starts to understand the true meaning of his parents' actions. He might develop a more empathetic side, seeing things from the perspective of others, especially those affected by Naruto and Sasuke's past actions. He also grows in terms of his combat skills, learning from both his father's brute force and Sasuke's finesse. His character arc could be about finding his own identity within the context of his parents' great reputations.
As of now, Naruto and Sasuke haven't died in the Boruto manga. Their characters continue to play significant roles and contribute to the story's development.
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.
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.
Well, a cool plotline could be Boruto having to deal with the combined enemies of his father and Sasuke. Enemies from Naruto's past might target Boruto to get revenge on Naruto, and at the same time, there could be remnants of Sasuke's old foes as well. Also, in the fanfic, it would be interesting to see how Boruto's training is different. Maybe he has both Naruto and Sasuke as his mentors, and they constantly bicker about the best training methods, which adds a bit of humor to the story.