What are some interesting plot ideas for a Goku Naruto crossover fanfiction?

One idea could be Goku ending up in the DC universe and having a friendly spar with Superman. Their different power sources and fighting styles would make for an exciting encounter. Maybe Goku learns about Kryptonite and how it affects Superman, which gives him a new perspective on weaknesses.

One idea could be Goku Black crossing over into a modern-day Earth where he has to deal with advanced technology that he doesn't understand at first. Another could be a crossover with a different anime universe, like Naruto, where Goku Black's power clashes with the ninja abilities. Maybe he teams up with Naruto against a common enemy.

One idea could be Goku from Dragon Ball crossing over into a world like Fairy Tail and having a harem of the female mages there. Maybe he helps them in battles and gradually forms relationships with them.

Another plot could involve Xeno Goku getting stranded in a different anime world during the crossover. He has to adapt to the new rules and powers there while also trying to find a way back home. He could make new friends and enemies in this strange world.

One idea could be that Goku and Vegeta are transported to an alternate universe where they have to team up with their alternate selves to defeat a powerful new enemy that is a combination of all the foes they've ever faced. This would force them to not only work together but also understand different versions of themselves.

One idea could be Goku crossing over into a different anime universe, like the Naruto world. He could end up in a fight tournament there and show off his Super Saiyan Blue form. His ki attacks would be a new and strange concept to the Naruto characters.

One idea could be that Goku is transported to a different universe where he meets various female characters from different anime. They are all intrigued by his power and his pure-hearted nature, and a harem dynamic starts to form as they all want to be around him and train with him.

A Goku crossover with the Pokémon world could be really fun. Goku could try to catch Pokémon using his speed and strength. He might also team up with Ash to battle powerful Pokémon trainers. Or how about a crossover with the Digimon world? Goku could enter the Digital World and help the Digimon in their battles against evil Digimon using his energy attacks.

In 'naruto black goku fanfiction', a plot could be that Black Goku is somehow connected to an ancient evil in the Naruto world. For example, there could be a long - forgotten scroll or prophecy that mentions a being like Black Goku. When he arrives, he starts to awaken dark forces that were once sealed away. Naruto and his friends then have to go on a journey to find out the origin of Black Goku and how to stop these newly awakened threats. Along the way, they might encounter new types of enemies and also gain new powers to face Black Goku and the emerging darkness.

Perhaps they could start off not knowing they are brothers. Naruto is in his ninja world and Goku is in his. Then, a strange rift in the dimensions brings them together. They realize their connection when they notice similar powers or markings. After that, they train together and combine their unique skills, like Naruto's shadow clones with Goku's ki attacks, to face challenges in both worlds.