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.
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.
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.
Well, Vegeta would be a likely character. He might be initially suspicious of the female Goku. Maybe he thinks she's a threat or just can't believe there's another Goku - like being. He could be there to add some comical moments as he tries to understand the situation.
In general, it's a bit of a toss-up. The strength of Manga Goku and Anime Goku can vary depending on the specific arcs and battles. Sometimes, it might seem like one is stronger in a particular situation, but that could change in another.
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.