One idea could be a fanfic that focuses on the untold adventures of Naruto's parents, Minato and Kushina. It could explore their relationship, their time as ninja in Konoha before Naruto was born, and how their actions and decisions shaped the future of the village.
You could write a fanfic where Naruto is sent to a different hidden village for a special training mission. This would introduce new characters from that village, new jutsu for Naruto to learn, and different cultural aspects of the ninja world. For example, if he goes to the Hidden Sand Village, he could learn about their unique sand-based jutsu and how their village operates differently from Konoha.
One idea could be a fanfic where Naruto discovers a hidden ninja village that has a completely different set of jutsus. He decides to learn from them to bring new skills back to Konoha. This could lead to new friendships and rivalries within the new village as Naruto tries to prove himself.
First, decide on the main plot or concept. It could be something like a new villain in the Naruto universe or a different take on an existing story arc. For example, if you want to focus on a new villain, think about their motives, powers, and how they would interact with the existing characters in the Naruto world.
You could write a fanfic about Naruto's son, Boruto, going back in time to the era of the original Naruto series. He could interact with his father as a young ninja and see the struggles he went through first - hand. This would create interesting scenarios where Boruto could use his future knowledge to help or accidentally mess things up.
One idea could be Naruto with a new, more mature and refined look. He could have a different style of clothing, perhaps something more regal to match his status as a hero. Another idea is a new look based on a different culture within the Naruto world, like dressing in the style of the Sand Village.
You could write a fanfic in which a new game is introduced in the Naruto universe. This game has special powers as prizes. Naruto and his comrades compete in this game, but there's a dark plot behind it by an old enemy trying to disrupt the village through the game's chaos. The fanfic could explore their journey to expose the plot and win fairly.
Maybe the 'naruto new eyes fanfic' could revolve around a character who is born with these new eyes but doesn't know how to control them at first. As they go through various challenges in the Naruto world, like battles and making alliances, they gradually learn to master their new eye power. For example, they might be able to use it to see through illusions that are even more powerful than those usually created in the Naruto universe.
Maybe the new Hokage is faced with a crisis within the village. For example, there is a rift between different ninja clans, and the Hokage has to use his/her diplomatic skills to bring peace. They could start by holding clan meetings and listening to each clan's concerns.
Well, how about a new nindo based on self - discovery? The Naruto fanfic could be about a young ninja who initially follows the traditional nindo of his clan but then stumbles upon a personal journey of self - discovery. Through various trials and adventures, he realizes that his new nindo is about accepting all parts of himself, including his weaknesses. This could lead to him developing unique jutsus that are based on his new understanding.
Sakura could design Naruto's new clothes. She has shown an interest in fashion and is quite creative. She might make him something that combines both practicality and style, knowing Naruto's active lifestyle as a ninja.
Perhaps it's through a special encounter. He could meet an ancient being or a powerful sage who reveals the existence of this new element to him. The being might see Naruto's potential and decide to guide him in unlocking this new power. This would also introduce new characters and lore to the fanfic.