One idea could be a crossover where Naruto's world is invaded by spirits and Tohka comes to help. Naruto could be intrigued by Tohka's powers and they team up to fight the new threat.
A possible plot could involve the two of them trying to keep the pregnancy a secret from their enemies. They know that if their foes find out, they might target Tohka and the baby. So they have to be extra careful and create a whole elaborate plan to hide the fact that she's pregnant while still going about their normal lives and duties.
One interesting 'dark tohka fanfiction' could be one where Tohka is in a post - apocalyptic world. She has to struggle not only with her own darkening emotions but also against new and more menacing enemies that are products of the desolate world. This type of story can explore how Tohka's character changes in such a harsh environment.
A plot idea could be that Naruto discovers a new, ancient form of chakra that has been lost for centuries. He then has to train to master this chakra while also dealing with the political implications within the Hidden Leaf Village. Some elders might be against him exploring this new power for fear of the unknown, but Naruto, being Naruto, is determined to master it for the good of the village.
One idea could be that the events of 9/11 somehow influence the Hidden Leaf Village. For example, they might tighten security and Naruto could be part of a new team in charge of protecting the village from potential outside threats inspired by the real - world event. Another plot could involve characters from Naruto trying to understand the concept of such a large - scale tragedy and how they can prevent similar things in their own world.
One idea could be that Neji discovers a new hidden power within Naruto that he helps Naruto master. This could lead to them having to face a new, powerful enemy together.
One interesting plot idea could be a time - travel story. For example, Naruto is sent back in time to the era of the First Hokage. He could use his knowledge of future jutsu and events to change things for the better in the past. Another idea is a story where Naruto discovers a hidden clan within Konoha that has a unique and powerful Kekkei Genkai. He then has to help this clan gain acceptance in the village. A third idea might be a story where Naruto is turned into a different creature, like a cat or a fox, and has to find a way to turn back while still dealing with the normal threats to the village.
One idea could be a story where Naruto is sent on a mission to the Soul Society and meets Soifon. They start off as rivals, with Soifon being distrustful of Naruto's brash and energetic ways. But as they face a common enemy, like a powerful Hollow that's immune to normal attacks, they have to work together. Naruto could teach Soifon about his never - give - up attitude and she could show him some of the more refined combat techniques of the Soul Reapers.
Well, one idea could be that Naruto is on a hunt for a powerful and elusive enemy. Maybe this enemy has some unique abilities that Naruto has to figure out how to counter. Another could be that he's hunting for a rare item that's crucial for saving the village or someone he cares about.
A great plot could involve the female Naruto being sent on a diplomatic mission to another village. There, she discovers a conspiracy against the Hidden Leaf Village and has to use her wits and ninja skills to expose it and prevent a war. Along the way, she also forms unexpected friendships with some of the villagers from the other village, which helps her in her mission.
A really interesting plot could be a tournament in which both Naruto characters and Pokegirls participate. They have to fight against each other using their respective skills. It would be a test of strategy and power, and also a great opportunity for character development as they learn from one another's fighting styles.