One idea could be that Venom somehow ends up in the Naruto universe. Maybe a strange rift in dimensions brings Venom to Konoha. He could initially be seen as a threat, but Naruto, with his ability to see the good in people (or in this case, symbiotes), tries to befriend Venom. This could lead to some really interesting battles and storylines, like Venom helping Naruto against powerful enemies using his unique powers.
A third idea is that in a post - Fourth Shinobi War Naruto world, a group of scientists accidentally create a Venom - like creature. This creature starts causing chaos, and Naruto, now a respected Hokage, has to figure out how to stop it without killing it. He might use his talk - no - jutsu to try and reason with the Venom - like being, while also using his ninja skills to protect the village from its rampages.
Another fanfic concept could be a fusion of Naruto and Venom's powers. For example, Naruto gets infected with a part of the Venom symbiote. He then has to learn to control this new power, which combines his chakra abilities with Venom's strength, speed, and the ability to create weapons from his own body. It would be a struggle for Naruto at first, but he would gradually master it and become an even more formidable ninja.
One idea could be that Naruto somehow gets infected with the Venom symbiote. He might initially struggle to control it, but then use its power to enhance his ninjutsu. For example, the symbiote could give him an extra boost in speed and strength during battles, like when he's facing tough opponents like Madara. It could also change his appearance, maybe adding some black markings similar to the Venom look, which could be a new form for him in the story.
One idea could be that Naruto is transported to the Godzilla universe. He could use his ninja skills to try and communicate with Godzilla or other kaiju. Maybe he'd attempt to use his shadow clone jutsu to confuse the monsters during a battle.
One idea could be that Naruto characters are summoned as Servants in FGO. For example, Naruto himself could be a Berserker with his never - give - up attitude and powerful chakra being translated into high - level stats. Sasuke could be an Assassin, using his Sharingan to detect and strike enemies stealthily.
A more serious fanfic could be set in a post - apocalyptic world that was destroyed by a combined force of villains from both Naruto and Bleach universes. Naruto and Ichigo are the last hopes. They meet and initially clash due to their different ways of fighting and beliefs. But they gradually learn from each other and combine their powers in a unique way to take on the remaining villains and try to restore their worlds.
A fanfic could be written where Alita is reincarnated in the Naruto universe as a ninja. She retains her combat skills but has to learn how to use chakra. Naruto becomes her friend and helps her adapt. They go on adventures together, facing off against powerful enemies. Alita's unique fighting style would make her stand out among the ninjas, and together they could become a formidable team.
One idea could be that Deadpool somehow gets transported to the Naruto universe. He'd be really confused at first but then start causing all kinds of chaos with his unorthodox fighting style and fourth - wall - breaking humor. Maybe he'd try to team up with Naruto, thinking he could use some of Naruto's cool jutsu in his own battles back home.
One idea could be a story where Naruto is somehow transported to the DxD universe and meets Ophis. He could form an alliance with her, perhaps because they both have a sense of being outsiders in the new world. Naruto's unique skills and his never - give - up attitude could influence the events in the DxD world in interesting ways.
One idea could be to have Naruto characters transported to the world of Shadow of Mordor. For example, Naruto himself could use his shadow clones in the same way the main character in Shadow of Mordor uses the wraith abilities. His clones could be used for stealth and surprise attacks, just like the wraith's powers are used in the game. It would be interesting to see how Naruto's positive and determined attitude would contrast with the dark and gritty world of Shadow of Mordor.
One idea could be to have Naruto characters trapped in the Maze Runner's maze. For example, Naruto, Sasuke and Sakura could be among the 'runners'. Naruto's determination and his ability to never give up would be a great asset in trying to find a way out of the maze. His shadow clone jutsu could be used to explore different paths simultaneously.
One idea could be to create a story where the ninjas from Naruto are inserted into the political intrigue of Westeros. For example, Naruto, with his strong sense of justice, could find himself in the middle of the power struggle for the Iron Throne. He might try to use his ninja skills to bring peace to the war - torn land, much like he did in the Hidden Leaf Village.