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.
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.
A powerful rogue ninja who has mastered a forbidden jutsu that gives him the ability to control minds could be a great main antagonist. He could use this power to turn Naruto's friends against him, creating a lot of internal conflict within the group.
One possible plot could be Naruto discovers a new hidden village with a unique jutsu that he wants to learn. He embarks on a journey there, facing various challenges along the way, like strange new enemies and difficult terrains. This would add a new adventure aspect to the Naruto universe.
It's likely a crossover fan fiction that combines elements of the Naruto universe with the concept of Pokegirls, creating a unique and imaginative adventure.
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.
The 'Naruto has knowledge' fanfic can also change the overarching themes. In the original, Naruto's growth is often about learning through experience. But in these fanfics, his pre - existing knowledge can make his growth more about how he uses that knowledge wisely. It can also introduce themes like the responsibility of having knowledge. For example, if he knows about a prophecy that could change the world, he has to decide whether to share it or keep it to himself, and this moral dilemma adds a new dimension to the story that wasn't as prominent in the original Naruto.
I'm not sure specifically what 'naruto the new age fanfic' is about as there could be many different interpretations. It might be a fan - made story set in the Naruto universe in a new era, perhaps with new characters, new jutsu, or different plotlines that deviate from the original Naruto story.