What are some interesting ideas for a Killer Instinct crossover fanfiction?

One idea could be an Ultra Instinct Goku crossing over with the Dragon Ball Super universe and the Naruto universe. He could end up in Konoha and use his Ultra Instinct to sense and counter the attacks of the ninja there. Maybe he'd even have to fight some of the powerful ninjas like Naruto or Sasuke in a friendly sparring match to test their skills against his new form.

A plot could involve a group of rogue ninjas with a killer instinct forming an alliance. They target the Hidden Leaf Village with a plan to steal a powerful, ancient artifact. Naruto and his team have to not only stop them but also figure out the true motives behind this alliance. Along the way, they discover secrets about the artifact that could change the balance of power in the ninja world.

Maybe Goku gets mixed up in the events of the Injustice storyline. He could initially be confused by the alternate version of Superman who has gone bad. Goku, with his pure heart and Ultra Instinct, might try to bring the corrupted Superman back to the light. This could lead to some intense battles with the Injustice League as Goku tries to set things right.

In 'naruto animal instinct fanfiction', there might be the concept of characters taking on animal traits physically. Like some characters could grow claws or have fur in certain situations for added protection or attack power. Also, the communication with animals could be a big part. Naruto could communicate with all kinds of animals in the forest, getting valuable information from them. And perhaps there are stories where the characters' emotions are more in tune with animal instincts, so they become more ferocious when angry or more cautious when sensing danger, just like animals in the wild.

A possible plot is a crossover with the Naruto universe. Goku in Ultra Instinct mode could be mistaken for some sort of super - powered ninja. He might end up training with the Hokage or getting involved in the Akatsuki's plans. Since his Ultra Instinct gives him such incredible reflexes and power, he could easily hold his own against the strongest ninjas like Naruto in his Six Paths Sage Mode or Sasuke with his Rinnegan. It would be a clash of two very different power systems.

To start a Killer Instinct crossover fanfiction, start small. Maybe focus on just one or two Killer Instinct characters in the new crossover setting at first. Create a vivid setting description for the crossover world. It could be a blend of the two universes' aesthetics. Then, start writing dialogues between the characters. Let their different personalities clash or cooperate, which will drive the story forward. As you write, keep in mind the rules and lore of both Killer Instinct and the crossover universe to make it believable.

One idea could be Naruto discovers a hidden ancient jutsu that unlocks his ultra instinct - like powers. He then uses these powers to quickly defeat enemies in the Fourth Great Ninja War, surprising everyone including Sasuke. Another could be Naruto training in a secret dimension where he gradually attains ultra instinct and has to face off against a new, powerful and unknown enemy that threatens the entire ninja world.

One idea could be a crossover with the Naruto universe. Goku with his Ultra Instinct could face off against Naruto in his strongest form. They might start as rivals but then realize they have a common enemy and team up. The story could explore how their different fighting styles and powers interact.

One idea could be a crossover with a popular superhero universe. Jeff the Killer could find himself in a city full of superheroes and villains. He might initially be seen as a threat but then has to team up with some heroes to fight a greater evil. Maybe he uses his stealth and killing skills in a different way to help save the day.

One idea could be exploring how Goku further masters Ultra Instinct in ways that are different from the canon. For example, he might have to face an enemy that can nullify his normal Ultra Instinct attacks, so he has to find new ways to use it, like combining it with Kaioken.