If Naruto were in the DBZ world, he could potentially learn to use ki. Since he's good at adapting and learning new techniques. He might combine his shadow clone jutsu with ki energy. Imagine hundreds of Naruto clones all shooting out ki - enhanced attacks. However, he'd also face some serious challenges. The villains in the DBZ world are extremely powerful and often planet - destroying threats. Naruto's usual foes are not on that level, so he'd have to level up fast.
Naruto's abilities would seem quite limited in the DBZ world at first. His ninjutsu like Rasengan would be no match for a Super Saiyan's energy blast. But Naruto has his own advantages. His strategic thinking and ability to create thousands of clones could give him an edge in some situations.
Well, a really cool concept could be a villain that threatens both the Naruto and DBZ universes. So, characters from both sides have to team up to defeat this powerful foe. Imagine Vegeta and Sasuke having to work together, despite their initial differences. Also, there could be a story where the Dragon Balls are somehow transported to the Naruto world, and Naruto and his friends try to figure out what they are and how to use them.
No. Naruto was created by Masashi Kishimoto. He had his own ideas and concepts for the story. It has its own Japanese cultural roots, themes like friendship, rivalry, and the ninja world which are different from DBZ. There's no evidence to suggest it started as DBZ fanfiction. The art styles, power systems, and character archetypes in Naruto are all designed independently of DBZ. For example, Naruto's chakra system is very different from DBZ's ki - based power system.
A popular one is 'Naruto in the Dragon Ball Universe'. Here, Naruto is transported to the DBZ world. He quickly gets involved in the battles against the villains. His shadow clone jutsu is a huge advantage as it confuses the enemies. And he tries to understand the concept of ki while also teaching the DBZ characters about ninjutsu. It's a really cool mix of the two universes.
It's really hard to say. Goku has the ability to reach extremely high power levels with his Super Saiyan forms. But Naruto has the Nine - Tails' power and his own Sage Mode. If they were combined, it might be someone like Goku who has also mastered chakra. He could use the power of the Nine - Tails along with his ki, which would make him insanely powerful.
One interesting Naruto DBZ fanfiction could be a crossover where Naruto characters learn the Dragon Ball Z techniques. For example, Naruto might learn the Kamehameha wave. It could create really unique battle scenes and power - up scenarios.
One idea could be a crossover where Bulma's technology is used in the Naruto universe. For example, she could create some new kind of ninja tools with her advanced knowledge. Maybe she helps the Hidden Leaf Village upgrade their defense systems. It would be interesting to see how the Naruto characters react to her and her inventions.
Naruto arriving in the DBZ universe in a fanfiction would be a wild ride. He'd probably have to adjust to the different rules of combat. The Z - Fighters might be curious about his shadow clones and how he can create so many of them. Naruto could also be a bit shocked by the destruction caused by the battles in DBZ. He might try to find a more peaceful solution to conflicts, like he does in his own world. And perhaps his positive attitude would rub off on some of the more hot - headed DBZ characters.
One great 'Naruto DBZ' fanfiction could be about a crossover where Naruto characters learn ki techniques from DBZ. For example, Naruto might train with Goku to master the Kamehameha wave while still maintaining his own chakra-based abilities. This could lead to some really interesting battles against common foes in both universes.