One possible storyline could be that Goku gets Ultra Instinct right when Frieza is about to kill all the Namekians. He then uses his newfound power to completely overpower Frieza and save the day. Another could be that he gets it during a battle with the Ginyu Force and easily defeats them all in one go.
Well, it would completely change the battle dynamics. Ultra Instinct gives Goku a huge boost in speed, reflexes, and power. On Namek, he would be able to effortlessly dodge attacks from his opponents like Frieza. His punches and kicks would be much more powerful, and he could probably take on multiple enemies at once. It would make him almost unbeatable on Namek.
Yes, it is possible. In fanfiction, writers have the creative freedom to reimagine the origin of characters. Goku being born with Ultra Instinct can add a whole new layer to his character development. It could mean that his power growth would be different from the original story, perhaps faster or with different challenges along the way.
You could write a fanfiction where Goku teaches others about Ultra Instinct. Maybe he tries to pass on this power to Gohan or Trunks. This would involve Goku having to understand the power more deeply himself in order to teach it, and it would also be a great way to develop the other characters.
In the fanfiction world where Goku gets Ultra Instinct against Zamasu, the battle is a spectacle. Ultra Instinct Goku is like a different being. His reflexes are on a whole new level. He can sense Zamasu's every move before it even happens. Goku might start by testing Zamasu's defenses with quick jabs. As the fight progresses, he uses his Ultra Instinct to launch a full - scale offensive. His attacks are not only strong but also strategic. He might target Zamasu's weak points that he couldn't reach before. The fight could also involve Goku using Ultra Instinct to break through Zamasu's time - based abilities if the fanfiction has such elements.
Another storyline could involve a character from UQ Holder learning the secrets of Ultra Instinct from Goku. This would be a great way to blend the two universes' concepts. The UQ Holder character could struggle at first to understand and master it, leading to some comical and also tense moments as they train with Goku. Maybe they have to overcome some personal limitations in order to even begin to access the power of Ultra Instinct.
You can try looking on fanfiction websites like FanFiction.net or Archive of Our Own. They have a large collection of fan - made stories, and there's a good chance you'll find some related to Goku getting Ultra Instinct there.
A fanfiction could focus on Goku's relationships while in Ultra Instinct. For example, how does he interact with his friends and family? Does Vegeta view him differently? In this story, Goku might struggle to control the Ultra Instinct around his loved ones because it makes him seem so detached. This could lead to some interesting emotional moments between the characters.
A really interesting storyline could be that an ancient prophecy in the Fairy Tail world foretells the arrival of a being with ultimate power like Goku. The Fairy Tail guild is divided on whether to welcome him or be afraid. Meanwhile, there are other forces that want to use Goku for their own evil purposes. The story could revolve around Goku trying to figure out his place in this new world, while also having to deal with the various threats and the complex relationships within the Fairy Tail guild.
That really depends on personal preference. However, some popular ones often have a great balance between action and character development. For example, stories that explore how Goku's relationships change after getting Ultra Instinct can be really engaging.
Yes, he does. Goku achieves Ultra Instinct in the manga.