A great idea for Naruto friends fanfiction is to create a new adventure where Naruto and his friends have to team up with an unlikely ally. This could be someone from an enemy village who has a common goal with them. The story could explore how they build trust and friendship in this new situation, and how it changes their perspectives on different villages.
One idea could be to explore the friendships in different time periods. For example, how their friendships might have been different during their academy days compared to when they are on missions as adults. Another could be a 'what if' scenario, like what if Naruto made friends with an outsider to the village early on.
One idea could be that Naruto and Kurama have a day - out in the Hidden Leaf Village. They visit all the places Naruto used to go as a kid, like Ichiraku Ramen, and Kurama makes funny comments about human food. Another could be that they team up to prank the other villagers in a harmless way, just for fun.
One plot idea could be that Naruto and Sasuke have a secret code they developed as kids that no one else knows about. As they grow older and face challenges, this code becomes crucial in saving each other. For example, when Sasuke is on the verge of being taken over by the darkness completely, Naruto uses the code to reach out to the part of Sasuke that still remembers their childhood bond.
Maybe Itachi is on a secret mission outside of Konoha and he saves Naruto from a group of rogue ninjas. Naruto, being Naruto, is immediately drawn to Itachi's strength and kindness. They start to train together in secret. As they train, Naruto discovers Itachi's past and the burden he carries. This leads to Naruto vowing to help Itachi find a way to clear his name in Konoha and they become close friends in the process.
One plot idea could be that Naruto has to enter a dangerous, cursed forest to save his friends who were kidnapped by a powerful dark ninja. He uses his new, untested jutsu to fight off the forest's deadly creatures and the dark ninja's minions. Another could be Naruto traveling to a different dimension where his friends are held captive by an otherworldly being, and he has to figure out the rules of this new world to rescue them.
One idea could be exploring the backstories of the Smiling Friends characters in more detail. For example, what made Pim and Charlie become Smiling Friends in the first place? Another could be creating a crossover with another popular animated series, where the Smiling Friends have to interact with different characters and face new challenges.
A 'friends crossover fanfiction' with 'How I Met Your Mother' could be really fun. Maybe Ted Mosby could be in New York for a job interview and end up at Central Perk. He meets the friends group and starts sharing his stories about searching for love. The different perspectives on relationships between the two shows would create great storylines.
Maybe there's a plot where they all get trapped in a genjutsu that makes them relive their worst memories, but they help each other break free. They realize just how much they mean to one another as they support and comfort each other during this difficult time. This could strengthen their bond even more and lead to new adventures with a stronger friendship at the core.
One interesting idea could be the combination of Naruto's ninja skills with mecha technology. For example, Naruto might use his chakra to power up the mecha in unique ways. Another idea could be the new enemies that are created specifically for this mecha - Naruto concept, like robotic shinobi that require different combat strategies compared to normal foes. Also, the design of the mecha Naruto itself can be really cool, perhaps with features inspired by the Nine - Tails.
A great idea for 'harry potter and friends crossover fanfiction' is a crossover with 'Narnia'. The magical world of Narnia and Hogwarts have some similarities. Harry and his friends could enter Narnia through a magical portal in Hogwarts. They could help the Pevensie children in their battles against the White Witch. Another option is a crossover with 'The Chronicles of Prydain'. Harry and his friends could journey to Prydain and encounter the magical creatures and challenges there. And a crossover with 'Fantastic Beasts' but in a different way, like the main characters from 'Harry Potter' meet Newt's ancestors and have adventures with them.
A crossover with 'My Little Pony' could also be fascinating. Picture the pastel - colored ponies meeting the cute but accident - prone HTF characters. There could be a lot of confusion as the ponies' magic might not work in the same way in the HTF world. The HTF characters would be intrigued by the ponies' kindness and harmony - based society.