In a Naruto world fanfic, Killua would bring a whole new dynamic. He has a dark past as an assassin which could either make him a feared or respected figure. His family's training has made him physically and mentally tough. In battles, he could use his electricity - based attacks in creative ways against ninjas. But he would have to learn about things like jutsus and the ninja villages. Also, his relationship with Gon in the HxH world was important for his character development, and in the Naruto world, he might find a similar bond with a fellow shinobi, which could change his perspective on things.
He could form a rival - like relationship with Sasuke. Both are highly skilled and have a bit of a dark side. They might constantly compete to prove who's better in combat.
Yes, there are likely some fanfictions out there with such a concept. Fanfiction writers often come up with creative crossovers. You can try searching on popular fanfiction websites like Archive of Our Own or Fanfiction.net.
His abilities would likely cause quite a stir. Killua's ability to move at high speeds and his combat skills would make him a formidable opponent in the Naruto universe. Maybe he'd be seen as an outsider at first, but as he proves himself, he could be respected. His nen - based attacks could be misinterpreted as some strange new jutsu that the ninja haven't seen before. He might even team up with some of the more adventurous ninja like Naruto himself and go on wild adventures.
Killua could potentially adapt his Nen abilities to the magic system in Fairy Tail. His Lightning Palm, for example, could be seen as a form of lightning - based magic in the Fairy Tail world. He might be able to combine his assassin skills with the magic knowledge of Fairy Tail. Maybe he'd learn some new spells or techniques from the wizards there to enhance his own fighting style.
Maybe in the fanfiction, Naruto discovers Killua's world and is in awe of Killua's lightning - based abilities. He then tries to learn from Killua to enhance his own Rasengan or other jutsu. Also, it could involve the two of them teaming up against a common enemy that threatens both their worlds.
Yes, there are some. You can start by looking on fanfiction websites. Some authors might create stories where they draw parallels between Naruto and Killua, perhaps in terms of their growth, their relationships with friends, or their unique abilities.
The theme of growth is also prevalent. They both start as somewhat naive boys and grow into powerful and more mature individuals. In 'naruto is like killua fanfiction', you might see how they influence each other's growth, for example, Naruto's positive outlook might affect Killua's more cynical view at times, and vice versa.
In such a fanfic, the real world's reaction would vary. Kids would probably be excited and see Naruto and his friends as heroes. However, adults would be more cautious. The media would go crazy, reporting on every move of these new arrivals. There would also be those who would try to profit from the situation, selling Naruto - related merchandise or offering tours to see the 'newcomers'.
Gon in fanfiction can be very single - minded in his pursuit of goals, just like in the original. He might be a bit more naive at times, which can lead to interesting plot twists. Killua is often portrayed as having a complex emotional side. He struggles with his past as an assassin and his loyalty to Gon. His cool exterior may crack in some fanfictions, showing his true feelings.
I think Midoriya could be his best friend. Midoriya is kind - hearted and always looking to learn, which would appeal to Killua. They could bond over their shared desire to become stronger and protect others.