Well, the King Kamehameha story is quite interesting. King Kamehameha started his journey to unify the islands at a time when the Hawaiian archipelago was divided among many chiefs. He was able to amass an army and navy, with the help of some Western advisors and weapons. He first conquered the Big Island of Hawaii. Then he gradually expanded his territory to the other islands. His leadership led to the creation of a more cohesive Hawaiian nation. His legacy can be seen in the modern - day Hawaiian culture, language, and governance.
Vegeta could be a great rival. He might see Goku's new position as God of Destruction as another thing Goku has achieved that he hasn't. This could fuel their competitive nature even more.
In the King Kamehameha story, his early life and upbringing within a noble family was a starting point. Then, his realization of the need to unify the islands led to him gathering resources and allies. His battles against rival chiefs on different islands, like Maui and Oahu, were key events. These battles were often fierce and required strategic thinking. His successful unification not only brought political stability but also influenced cultural exchange and development within the Hawaiian islands. For example, trade between the islands became more organized and new cultural elements were introduced as a result of the unified nation he created.
The combination of two very different universes. Naruto has its own complex ninja world with unique powers and characters, and the Kamehameha is a super - powerful move from Dragon Ball. When these two are mashed up in a fanfic, it creates a new and exciting dynamic.
Goku does reach a state of immense power in the manga that rivals that of a God of Destruction. However, the specific title and all its implications might not be straightforwardly assigned to him. It's a complex development within the story.
Vegeta would be a great addition. His rivalry with Goku and his pride as a Saiyan would add an interesting dynamic. He might be initially jealous that Goku is getting to fight and train with the God of Destruction. But then he would also want to prove himself and join in the action. Whis could also be included. His knowledge and calm demeanor could help in situations where the power of Goku and the God of Destruction gets out of hand.
I'm not sure of a specific 'naruto kamehameha fanfic' off - hand. But you can try searching on fanfiction websites like FanFiction.net or Archive of Our Own. They usually have a wide variety of fan - created stories that might include what you're looking for.