One popular Gogeta and Vegito fanfiction might be those that explore their power levels in new and creative ways. For example, a story could have them facing an extremely powerful new enemy that forces them to combine their powers in unexpected ways.
Well, a common theme is the exploration of different universes. In gogeta crossover fanfic, the idea of Gogeta traveling to different fictional universes and dealing with their unique challenges is quite popular. It's like he could end up in a universe full of magic and have to figure out how his power works there. Another theme is the combination of fighting styles. Since Gogeta is a powerful fighter, seeing how his fighting style combines with those from other characters in a crossover is exciting for fans. And of course, there's the theme of saving the multiverse. Many fanfics have Gogeta as the key to preventing some sort of cataclysm that affects multiple universes.
Some dedicated Dragon Ball fan communities on social media platforms might also be a good source. For example, certain groups on Facebook or Reddit where fans discuss and share their fanfiction works. However, the availability of exactly this pairing might vary. You may need to do some searching within those communities.
First, you need to have a good understanding of the characters. Know their personalities, their powers, and their relationships. For example, Gogeta is the result of Goku and Vegeta's fusion through the Fusion Dance, and Vegito is from the Potara earrings. This knowledge helps in creating believable scenarios for them.
Goku Black could be an interesting character to pair with Gogeta. Their power levels are both high and their personalities are quite different. Goku Black is more of a villainous character, so the dynamic between him and Gogeta, who is a hero, would be full of tension. Another interesting character could be Saitama from One Punch Man. The contrast between Gogeta's complex power - up system and Saitama's one - punch - kill ability would make for an exciting crossover. And then there's Naruto. His ninja skills and determination paired with Gogeta's power would create a unique combination.
In a fanfiction where Naruto is raised by Gogeta, the story would take a whole new turn. First of all, Naruto would be exposed to a completely different culture, that of the Saiyans. This could change his values and goals. For example, instead of just aiming to be Hokage, he might also strive to be the strongest fighter in a more universal sense. Gogeta would probably introduce Naruto to the concept of fusion, which could inspire Naruto to develop new jutsu based on the idea of combining powers. Also, Naruto's physical strength would be enhanced much more quickly with Gogeta's training methods, which often focus on pushing the body to its limits.
They often interact as powerful allies. They respect each other's strength since they are both the result of fusing two extremely strong Saiyans. For example, they might exchange fighting techniques or strategies.
It gives a chance for creativity in exploring gender - swapped or alternate versions of the characters. Fanfiction writers can play with the personalities and backstories of these characters in ways that the original series might not have explored. For example, they can write about how the female Vegito might approach a relationship with Gogeta differently than a male Vegito would, adding new layers to the story.
Naruto's relationships would be transformed if raised by Gogeta in this fanfiction. His connection to his village would be different. He might not feel as strong of an emotional attachment to Konoha as he did in the original story. In terms of his friends, he would be more of a loner in a sense, but also a figure of mystery and power. His relationship with Kakashi would also be altered. Instead of Kakashi being his main teacher, Gogeta would fill that role. This could lead to Naruto having less of a traditional ninja - like view of relationships and more of a Saiyan - influenced view, which could be more about strength - based alliances and mutual respect for power.