Perhaps the story could start with Naruto having strange dreams about Goku's life. As the story progresses, he gradually unlocks Goku's powers. He could then use these powers to protect the Hidden Leaf Village in a more powerful way. For instance, when the village is under attack by a powerful enemy, Naruto could transform into a Super Saiyan - like state, shocking his enemies and allies alike. His training would also change, as he'd have to learn to control his new Saiyan powers, which would be a whole new journey for him.
One common theme is friendship. Since all these characters value their friends highly in their original stories, in fanfiction they often form strong bonds across their different universes. For example, they might fight together against a threat that endangers all their worlds.
In fanfiction, the concept of Naruto being Goku's reincarnation is not unheard of. Fanfiction writers like to blend different fictional worlds to create unique stories. If Naruto is Goku's reincarnation, it could mean that he has a different kind of chakra, perhaps more related to Ki energy from Dragon Ball. This could also affect his relationships with other characters. For instance, Sasuke might view Naruto's newfound powers with suspicion or envy, and Naruto himself might struggle to come to terms with his new identity that has roots in a completely different anime world.
One reason could be the popularity of both characters. Writers want to combine two well - loved anime heroes. Another reason might be the similarity in their underdog - turned - hero stories. Naruto was an outcast in his village at first, and Goku was a low - class Saiyan. So, by making Naruto Goku's reincarnation, it gives a new twist to Naruto's character development.
For Goku Black reincarnation fanfiction, a plot could involve him being reincarnated as a half - Saiyan, half - something else (like a Namekian). This would give him new powers and a different perspective. He might be hunted by an organization that fears his power, and he has to find a way to either hide or use his powers to fight back. Along the way, he could encounter other characters who help him understand his new existence.
One possible plot could be that there is a rift in the multiverse that brings Goku and Luffy together in a strange new world. They initially misunderstand each other and start to fight. As the fight progresses, they both realize that there is a greater threat at hand that is causing the rift. So, they team up, with Goku teaching Luffy some of his combat techniques and Luffy showing Goku the value of friendship and loyalty in a different way.
There's also the possibility that Orochimaru could be the main antagonist again. He might be intrigued by Naruto's new powers and try to experiment on him. Orochimaru is always after power and knowledge, and Naruto's Saiyan powers would be something he'd be very interested in. He could use his snake - like abilities and various jutsus to try and capture Naruto.
A new character could be the main antagonist. For example, a powerful alien who has heard of Goku Black's reputation and wants to prove himself by defeating the reincarnated warrior. This alien could have unique powers that are a challenge for Goku Black to overcome, like the ability to nullify ki attacks.
Sure. You can check out websites like Fanfiction.net. There are numerous fanfictions featuring these characters. Some might be about epic crossovers where Goku, Naruto, Luffy, and Ichigo team up to fight a common super - powerful enemy. Others could focus on individual character development within the context of their respective universes.