It could be about Naruto somehow ending up in the Venom universe and having to team up with Venom to fight a common enemy.
Maybe Naruto discovers a strange symbiote like Venom in his own world. The symbiote could give him new powers, and he'd have to learn to control it while also dealing with the people in his village who might be scared of this new, strange power. He could then use the symbiote's abilities in his battles against the usual Naruto -verse villains.
In a Naruto finds Venom fanfiction, it might be that Venom is actually a form of chakra - based entity in the Naruto world. Naruto, being the curious and adventurous ninja he is, tries to understand and communicate with this 'Venom' chakra. This could lead to a whole new set of adventures for Naruto, as he explores the nature of this strange chakra and how it can be used. It could also involve Naruto teaching Venom - like things about his world, like the concept of ninjutsu and how to use it, creating a really interesting cultural exchange within the story.
Maybe in this fanfiction, Orochimaru somehow gets hold of the Venom symbiote and tries to use it to create a powerful weapon. But the symbiote escapes and attaches itself to Naruto. Naruto then has to deal with the fact that the other villagers are scared of him because of his new, monstrous appearance. However, he shows them that he's still the same Naruto by using the symbiote's powers for good and saving a group of villagers from a group of rogue ninjas.
There are likely 'Naruto is Venom' fanfictions out there. In them, the story might explore how Naruto copes with the alien entity inside him. The Venom symbiote in the Naruto universe could create some really unique scenarios. Maybe Naruto has to fight against the more violent tendencies of the symbiote while still using its power to protect his village. It could also introduce new villains or allies related to the symbiote's origin.
The book could be about the history of the ninja clans. Maybe it contains long - lost secrets of the Uchiha or Senju clans. It might detail their ancient jutsus, alliances, and feuds.
Well, it could be that Naruto is dealing with a big threat in his own world, like a new Akatsuki plot. And in the midst of all this, Venom arrives. But Naruto, being preoccupied with protecting his friends and the village from the Akatsuki, doesn't give Venom any attention. Venom, being a symbiote used to being a big deal, decides to prove its worth by challenging Naruto's enemies on its own, which creates a whole new dynamic in the story. Maybe it even forms an unexpected alliance with some of Naruto's foes who also feel neglected by Naruto's focus on the main threats.
Well, the fanfiction could start with Naruto being in a strange place, like a different dimension where he encounters Venom. Venom, seeing Naruto's potential, decides to form a bond with him. This bond would bring out new powers in Naruto. He could use Venom's abilities, like the webbing and enhanced physical strength, in combination with his ninja skills. For example, he could swing from building to building in Konoha using the webbing while also using his shadow clones to confuse enemies.
Well, Naruto could be initially shocked by Venom's appearance. Maybe Venom would see Naruto as a worthy host at first, thinking his chakra could enhance its powers. But Naruto, being Naruto, would likely try to reason with Venom and convince it to use its power for good. They could end up teaming up against some common enemies in the Naruto universe, like the Akatsuki.
At first, Venom might be angry at Naruto for neglecting it. But as the story progresses, Naruto could realize his mistake. Maybe he sees Venom helping the villagers in some way, like protecting them from a minor threat. This could make Naruto approach Venom and try to make amends. They could then start to train together, with Naruto teaching Venom about chakra and Venom teaching Naruto about its unique abilities.
In this fanfiction, Naruto as Venom could be on a mission in the Marvel universe that accidentally crosses paths with Black Widow. The symbiote gives Naruto enhanced strength and agility, which Black Widow quickly notices. At first, she thinks he's a threat. But Naruto, being Naruto, tries to explain his situation. They then discover that there's a link between the chakra in Naruto's world and the strange energy sources in the Marvel universe. So, they join forces to investigate this link further, which leads them to various adventures and battles against powerful foes.
Maybe Naruto discovers modern - day technology in a hidden shinobi village that has been secretly researching it. He could then try to integrate this technology into the ninja world, like using smartphones to communicate during missions instead of traditional methods. This would likely cause a stir among the more traditional ninja.
One possible plot could be that Venom somehow gets transported to the Naruto universe. He might initially be seen as a strange and powerful beast. Naruto, being the curious and friendly ninja he is, tries to communicate with Venom. They could end up teaming up against a common enemy like Orochimaru who is interested in Venom's powers for his own dark experiments.