Well, perhaps the Dragon Balls are accidentally sent to the Naruto universe. Naruto and his friends then have to figure out what these strange orbs are. Meanwhile, Goku and his pals come looking for the Dragon Balls and end up meeting Naruto. They could exchange their different fighting styles and techniques, like Naruto teaching Goku about chakra control and Goku showing Naruto how to sense ki.
One idea could be that a new powerful character arrives in both the Naruto and Dragonball Z universes. This character has a unique charm that attracts the female characters from both worlds. For example, in Naruto, Sakura, Hinata and Ino might be intrigued by this new person's skills and different personality. In Dragonball Z, Bulma, Chi - Chi and Android 18 could also be drawn to them. Another plot could involve a time - travel scenario where a character from one universe travels to the other and creates a harem there, bringing together different fighting styles and relationships.
One idea could be a crossover where Naruto and Goku team up to fight a common enemy. Maybe an evil force that combines the power - stealing abilities of Orochimaru and the planet - destroying might of Frieza. They would have to learn from each other's fighting styles and powers.
Well, one possible plot could be that Naruto and Goku somehow end up in each other's universes. Naruto could be intrigued by the concept of ki and try to learn it, while Goku might be interested in Naruto's ninja skills like shadow clones. They could team up to fight a common enemy, perhaps a new villain created by fusing some of the bad guys from both universes, like a combination of Orochimaru and Frieza.
One interesting plot could be that the Pokemons are suddenly exposed to the energy of the Dragon Balls. Some Pokemons start to gain Saiyan - like abilities. For example, Pikachu could become Super Saiyan Pikachu, with its electric powers amplified to an extreme level. It could then face off against powerful Pokemon villains in a whole new way, with the fast - paced combat style of Dragonball Z.
One idea could be that the characters from RWBY gain the ability to use Ki like in Dragonball Z. For example, Ruby could use her speed along with Ki blasts in a new and powerful way. Another plot could involve the villains from both universes teaming up, forcing the heroes to combine their skills and powers. Or perhaps there could be a tournament in the style of the World Martial Arts Tournament where characters from both RWBY and Dragonball Z participate.
Well, a cool concept for Pokemon and Dragonball Z fanfiction could be that the energy in the Dragonball Z world affects Pokemon in strange ways. For example, Pikachu could learn to use Ki blasts. Also, a story where the Z - fighters visit the Pokemon regions and have to participate in Pokemon battles to save the day. And a more complex idea would be a fusion of the two worlds' power systems. Say, a Pokemon trainer figures out how to use Ki to enhance their Pokemon's abilities, and in turn, the Pokemon help the trainer in combat against the powerful foes in the Dragonball Z world.
One possible plot could be that the Sailor Scouts are facing a new and extremely powerful enemy that they can't defeat on their own. Goku and his friends from Dragonball Z sense the danger across the dimensions and come to help. The Scouts are initially shocked by the Saiyans' power levels but then start to learn from them about ki control. Together, they combine their powers, like the Sailor Scouts using their magic with the Z - fighters' ki blasts to take on the foe.
Well, a cool plot might be that the Sage of Six Paths in Naruto has a connection to the Kais in Dragon Ball Z. This connection leads to a situation where Naruto and Goku have to work together to stop an ancient evil that threatens both universes. For example, the evil could be a powerful demon that feeds on both chakra and ki. They would have to combine their powers and the powers of their friends to stand a chance. Naruto could teach Goku some of his shadow clone jutsu, and Goku could show Naruto how to achieve Super Saiyan forms.
Well, it could be really exciting. Picture Naruto with Goku's ability to go Super Saiyan. Maybe Naruto could learn the Kaio - ken technique. The story could involve the two universes colliding, with villains from both sides teaming up. So Naruto and his friends from Konoha would have to join forces with Goku and the Z - fighters to save both their worlds.
Bulma from Dragon Ball Z in Naruto fanfiction has potential. She is smart and resourceful. In the Naruto world, she could use her intelligence to create new technologies or help with strategic planning during battles, and her interactions with the ninja characters would add a new dimension to the story.