His body build could also change. Kenshin is a very agile and muscular samurai. Naruto might develop a more lean and muscular physique, which would enhance his speed and strength in combat. This new appearance would not only set him apart from the regular Naruto but also show his connection to Kenshin Himura in this fanfiction world.
Naruto would likely be more empathetic. Kenshin has a deep understanding of the pain of others due to his own past. Naruto, under his care, would develop a stronger sense of empathy. He would be more likely to try to understand the motives of his enemies before attacking. His sense of humor might also change. It could become more subtle, influenced by Kenshin's more serious nature.
It could be really interesting. Maybe Naruto would have Kenshin's sword skills. He might use a katana instead of his ninja tools and have a more samurai - like fighting style while still having his ninja abilities.
Naruto's personality would also be affected by his supposed father being Kenshin. Kenshin is known for his kind heart and strong sense of justice. Naruto, already having a strong sense of right and wrong, would likely amplify these traits. He might be more focused on protecting the weak in a samurai - like way, rather than just as a ninja protecting the village. This could lead to new adventures and conflicts as he tries to uphold both ninja and samurai values.
Well, it could be really interesting. Naruto's energetic and determined nature combined with Kenshin's sword skills and sense of justice. Maybe Naruto would learn a different style of combat from Kenshin. He could also inherit Kenshin's philosophy of not killing unnecessarily. Naruto might grow up with a more refined sense of honor and chivalry.
Naruto could have a more imposing stature. Since Darth Revan was a powerful figure, Naruto might inherit some of that physical presence. He could be taller and more muscular than in the original Naruto story. His clothing style might also change, incorporating elements from both the Naruto and Star Wars universes. He could have a robe - like garment similar to what Darth Revan wore, but with ninja - style accessories.
Naruto's skin might start to glow with a strange energy, similar to how Kaguya seemed to have an otherworldly aura. His eyes could change color to something more like Kaguya's, perhaps a deeper, more mysterious hue. And his clothing might even transform to be more in line with Kaguya's style, as if the absorption of her power also influenced his physical form in that way. He might also grow taller or more muscular as a result of the new power coursing through his body.
One great 'Kenshin Himura Crossover Fanfiction' is the one where he crosses over with the world of Naruto. It's really interesting to see how his sword skills would compare to the ninja techniques in that universe. Another good one is the crossover with the Bleach universe, where his unique fighting style stands out among the Soul Reapers and Hollows.
Kenshin's training might make Dark Naruto more disciplined. His impulsive and dark nature could be toned down as he learns Kenshin's ways.
His friends might be initially shocked. Sakura could tease him about it at first but then grow to like the new look. Sasuke might be indifferent on the surface but secretly find it interesting. His enemies might underestimate him, thinking he's become more of a softie with the long hair, but then be surprised by his unchanged combat skills.
There might be. A lot of fanfiction explores crossovers and unique concepts like this. For FanFiction.net, create an account if you don't have one already, then search for 'Naruto is Kenshin Himura'. Archive of Our Own also has a large collection. You might have to dig a bit through the search results as not all stories will be exactly what you're looking for, but it's a good start.