Perhaps a powerful villain has the ability to combine different powers from different universes. This villain targets Naruto and in the process of fighting against this threat, Naruto somehow absorbs the knowledge of the Kamehameha. He then has to figure out how to use it in his own ninja - style way.
Naruto's understanding of different forms of power would expand. The Kamehameha is based on ki energy, which is different from chakra. This would make him more open - minded about other types of energy and power sources. He might start to explore if there are ways to combine chakra and ki, which could lead to him developing entirely new jutsus. This exploration could also make him more respected among the ninja community as a pioneer of new power - combining techniques.
Well, the plot could involve Naruto coming across a powerful being from the Dragon Ball universe who decides to teach him the Kamehameha. Naruto, being the eager learner he is, starts practicing it. He might struggle at first because the chakra control required for the Kamehameha is different from his normal jutsu. But as he trains more, he gradually gets better. He could then use this new skill in a big battle against a common enemy, surprising his friends and foes alike.
In such a fanfiction, it could be possible through a dark corruption of Naruto's power. Maybe the Nine - Tails' influence takes over him completely. His powers could go out of control, and with his incredible strength, he might start attacking without restraint, believing that the current world is beyond saving or redemption.
Well, in a fanfiction context, it could be possible if we consider a crossover universe where Naruto somehow ends up in the Star Wars galaxy. Maybe he's brainwashed by the dark side's influence which is similar to some dark forces in his own world. This could lead him to betray the Jedi ideals that he might have adopted during his time there.
One idea could be that Naruto somehow travels to the Dragon Ball universe and learns the Kamehameha from Master Roshi. Then he returns to his own world and uses it in an unexpected battle against a new and powerful enemy, like a rogue ninja with the ability to absorb chakra. This would add a new dynamic to his fighting style.
Naruto's character would grow in terms of his power understanding. The Kamehameha is a very different type of attack from what he's used to in the ninja world. So, he'd have to study it, understand its mechanics, and this would make him more of a strategic thinker. He might also start to explore other non - ninja techniques, which could change his whole approach to combat and protecting his village. He could become more open - minded about different forms of power, not just relying on chakra - based jutsu.
Well, in a fanfiction, anything can be made possible. Maybe there could be some sort of cross - dimensional rift that connects the Naruto universe with the realm of Poseidon. And through this rift, Naruto's mother could have had an encounter with Poseidon, resulting in Naruto being his son. It's all about creative imagination in fanfiction.
It might be blue like the original Kamehameha but with a bit of Naruto's chakra color mixed in, like a bright orange or yellow glow around it.
In this fanfiction concept, it could be that Odin had a secret mission in the Naruto world. He might have fallen in love with a kunoichi there, perhaps someone with special powers or a noble lineage. Their union could have led to Naruto's birth. It would also mean that Naruto would potentially have some latent god - like powers from Odin that could be explored in the story, like enhanced strength or the ability to control some Norse - inspired elements.
Well, in a fanfiction world, anything can be made possible. Maybe it could be some sort of magical cross - over event. For example, Aphrodite could have visited the Naruto universe in a disguised form and had a relationship with Naruto's father without his knowledge. Or there could be some powerful jutsu or magic that links the two different mythologies and makes Naruto her son.