Well, perhaps in the fanfiction, Goku's ki abilities are mistaken for a very rare and powerful form of magic in the Fairy Tail universe. This causes a stir among the different guilds. Some want to use his power for their own gain, while Fairy Tail wants to protect him. It could lead to a lot of interesting battles and character interactions as Goku tries to figure out how to get back home while also dealing with this new world's problems.
One possible plot could be that Goku somehow gets transported to the Fairy Tail world. He might initially be confused but quickly adapt due to his adventurous nature. He could team up with Natsu and the others to fight a common enemy, like a powerful dark guild that has a magic that can rival Goku's strength. Their combined powers would make for an epic showdown.
One possible plot could be that Goku somehow gets transported to the Fairy Tail world. He could join forces with Natsu and the gang to fight against a common enemy like Acnologia. Goku's power levels would be off the charts compared to most in Fairy Tail, but he'd be intrigued by their magic. Maybe he'd learn some magic himself or teach them some of his ki techniques.
Well, one possible plot could be that Goku somehow ends up in the Fairy Tail world. He might initially be confused by the magic there, but then start to learn about it. He could team up with Natsu and the gang to fight against a powerful dark wizard. Goku's strength and his unique fighting skills like the Kamehameha could be a great asset to Fairy Tail in battles.
Well, perhaps there could be a situation where an evil force in the Fairy Tail universe is creating portals to other dimensions to gather powerful allies. Deadpool accidentally stumbles through one of these portals. The Fairy Tail guild has to figure out how to deal with this strange, talkative, and unpredictable new 'ally'. Deadpool, on the other hand, is just excited to be in a new world full of magic and new things to fight. He could end up teaching some of the Fairy Tail members his unique combat moves, while also learning some magic from them in return.
Well, perhaps the Fairy Tail guild somehow gets access to Rick's portal gun. Lucy might be fascinated by the different dimensions it can open. Rick could be intrigued by the magical power sources in the Fairy Tail universe. And Morty could end up learning some basic magic from the guild members. They all then team up to face a powerful enemy that has been causing chaos across multiple dimensions and universes.
A cool plot might be that a powerful dark wizard in the Fairy Tail world discovers a way to control some of Ben's aliens. Ben has to seek help from Fairy Tail mages to break the control and then they join forces. The Fairy Tail members are amazed by Ben's ability to transform and his alien powers, and they work together to stop the dark wizard's plan to take over both worlds.
Well, in this fanfiction, the story could start with Naruto being in a strange new world, which is the world of Fairy Tail. His Rinnegan gives him unique abilities that both shock and intrigue the Fairy Tail wizards. They initially view him with suspicion but as they see his skills in combat and his determination to help, they accept him. And together, they embark on a journey to stop an ancient evil that threatens both their worlds. The Rinnegan could allow Naruto to understand the magic in the Fairy Tail world in a way that no one else can, leading to some really interesting interactions and battles.
A cool plot might be that a dark wizard from Fairy Tail discovers a spell that can open portals to other dimensions and accidentally pulls Inuyasha, Kagome, Shippo, etc. into their world. The Fairy Tail guild decides to help them get back home. But during this time, they realize that there are some similarities between the demons in Inuyasha's world and the dark creatures they fight in their own world. So, they team up. Inuyasha and Natsu could have a friendly rivalry over who is stronger and in the end, they combine their powers to defeat an ancient evil that was awakened by the portal - opening spell.
Maybe there's a powerful dark magic that is threatening both the KHR world and the Fairy Tail world. So, the Vongola Family decides to team up with Fairy Tail. Tsuna could bond with Natsu over their determination to protect their friends and families. The two groups would combine their unique powers. Like, Reborn's assassination skills along with Erza's swordsmanship could create a really cool battle strategy against the common enemy.
One possible plot could be that the Fairy Tail guild discovers a strange energy similar to the ki in the DBZ universe. Natsu, being the curious and powerful wizard he is, decides to investigate. He then somehow gets transported to the DBZ world. There, he meets Goku, who is intrigued by Natsu's magic. Together, they have to face a new enemy that is a threat to both their worlds. This enemy could be a powerful wizard who has found a way to combine dark magic with the power of the dragon balls.
One possible plot could be that Lucario, with its aura - sensing abilities, detects a strange magical disturbance in the Fairy Tail world. It travels there and teams up with Natsu. Lucario's combat skills and ability to sense opponents' moves before they happen would be a great asset in battles against powerful dark mages. Together, they embark on a journey to find the source of the disturbance and end up uncovering a conspiracy that threatens both the Pokémon world and the Fairy Tail world.