Well, it could center around Naruto coming across knowledge about Galactus. He could start to idolize Galactus' ability to control cosmic forces. Naruto might then attempt to incorporate some of those ideas into his own jutsu development. For example, he could try to create a jutsu that has the same all - consuming effect as Galactus devouring a planet, but on a smaller scale within the ninja battles he faces.
A 'Naruto is Galactus fanfiction' could be a really wild story. Naruto, being his curious self, discovers Galactus through some strange means, like a dimensional rift or an ancient artifact. He becomes intrigued by Galactus' power and starts to see parallels between Galactus' role in the cosmos and his own role as a ninja protector. He may then embark on a journey to not only understand Galactus better but also to use that knowledge to face new and greater threats in his world. This could involve Naruto trying to develop new forms of ninjutsu that are inspired by Galactus' power, or even trying to form alliances with other characters in his world who might be able to help him in his new - found pursuit.
Perhaps in this fanfiction, Naruto's origin as the son of Galactus is a secret at first. As he grows up, he starts to have strange dreams or experiences that lead him to discover his true heritage. This discovery could then lead to a whole new arc in the Naruto story. He could then seek out knowledge about Galactus and his powers, and along the way, face challenges from those who want to use his powers for their own gain or those who want to destroy him because of his connection to such a powerful being.
It's very possible. In the realm of fanfiction, the sky's the limit. Writers love to mash up different concepts and characters. If Naruto were a Galactus fan, it might start with Naruto somehow learning about Galactus. Maybe he stumbles upon some ancient scrolls that mention Galactus' power. This could then lead to Naruto's journey to understand more about this cosmic being, and how it might relate to his own ninja world and his quest for power.
One interesting story could be where Galactus arrives in the Naruto universe and the ninjas initially mistake him for a new powerful demon. They try to fight him using their jutsu but soon realize his power is on a completely different level. Naruto, being the determined hero, tries to communicate with Galactus to understand his purpose and prevent him from consuming the world's energy.
Besides Naruto and Sasuke, Sakura could also be a main character in such fanfiction. Her medical ninjutsu skills might be needed to heal the wounded during the battles against Galactus. And there could be some original characters created specifically for the fanfiction who have some special knowledge or power related to Galactus and the Naruto world.
There could be new villains from the cosmos. Since Naruto is the son of Galactus, other cosmic entities who oppose Galactus might target Naruto. For example, some powerful alien race that wants to get rid of any trace of Galactus' bloodline. They could send their most powerful warriors to the ninja world to take on Naruto.
There's a 'galactus crossover fanfiction' that involves Galactus and the Doctor from 'Doctor Who'. This one is really cool as it takes the concept of Galactus' destruction and the Doctor's ability to time - travel and save planets. The story has some really creative plot twists. For example, the Doctor tries to find a way to satiate Galactus' hunger without sacrificing entire planets. It's a unique blend of two very different fictional universes.
To write a good 'galactus crossover fanfiction', start with a great concept. Think about how Galactus' all - consuming hunger could impact the other world or characters you're bringing in. Develop your characters in a way that stays true to their original selves but also allows for growth within the new story. Also, don't be afraid to introduce new elements or rules that are specific to your crossover. For instance, if Galactus enters a magical world, how does his power interact with magic? Detail is key. Describe the new settings, the reactions of the characters, and the consequences of their actions. It should be a story that both fans of Galactus and the other crossover element can enjoy.
The plot might involve Harry being hunted by forces that fear his newfound connection to Galactus. He could be seen as a threat not only to the dark wizards but also to the Ministry of Magic who don't understand his powers. Along the way, he could meet other characters from the Marvel universe who are either trying to help him or stop him, depending on their own interests. His friends, like Hermione and Ron, would have to struggle to keep up with his new abilities and the danger he attracts.
It could be about Naruto getting Cell's powers. Maybe through some strange ninja jutsu gone wrong or a magical encounter. He could then use these new powers in his ninja battles.
It could be about Naruto using his telekinetic powers to fight new and stronger enemies. Maybe he discovers this power during a difficult battle and has to quickly learn to control it to save his friends.