In this kind of fanfic, one interesting storyline could be Naruto facing new and more powerful enemies as a Jounin. He might have to use his unique skills in more strategic ways. For example, his shadow clone jutsu could be used to deceive opponents on a much larger scale.
One interesting plot could be a jounin who has a secret mission to infiltrate an enemy village. He has to use his unique jutsu and skills to avoid detection. Another plot might involve a jounin training a group of genin in a very unorthodox way that challenges the traditional shinobi training methods.
One possible plot could be about an elite jounin who discovers a long - forgotten jutsu. This jutsu could be the key to a great power or a solution to a looming threat in the Naruto world. The jounin then has to protect this knowledge from falling into the wrong hands while also trying to master it himself.
One interesting storyline is in 'Naruto: The Lost Legacy'. Naruto and his friends stumble upon a long - lost ninja clan's secrets. They have to go on an adventure to protect these secrets from falling into the wrong hands. This involves battles against powerful foes and exploration of ancient ruins.
One interesting storyline could be about the daily office politics within the Naruto office. For example, how different characters vie for promotions or handle difficult tasks assigned by their superiors. It might also explore the relationships between characters who have different skills and personalities in this office setting.
Maybe a storyline where members of team 6 have to go on a special mission in a mysterious land. They encounter strange creatures and have to use their skills in unexpected ways. For example, Naruto might have to use his shadow clones in a creative way to solve puzzles in that land.
One interesting storyline could be about the relationship between the Shukaku and Naruto evolving in a unique way. For example, the Shukaku might teach Naruto some ancient and powerful jutsu that was once known only to the tailed beasts. This could give Naruto an edge in battles and also deepen their bond.
Another storyline could be a mermaid who is in love with Naruto. However, there are obstacles because she is from a different world. She has to figure out a way to be with him, and in the process, she uses her mermaid magic to protect the village from an underwater threat that is also affecting the land. This could create a unique bond between her and the villagers.
One possible plot twist could be that a previously underestimated ninja reveals extraordinary skills during the Jounin exams. For example, a shy and quiet character who has been in the background suddenly shows mastery over a rare and powerful jutsu. This would change the dynamics of the competition as other competitors would have to re - evaluate their strategies.
Maybe he would have mastered some new wind - style jutsus. For example, he could create more complex and powerful wind blades that can cut through even stronger defenses. Since he is at the Jounin level, his chakra control would be much more refined, enabling him to perform these advanced techniques.
Another plotline could involve a secret jounin who is actually a spy from another village but develops a loyalty to Konoha. They would be in a constant struggle between their original mission and their newfound feelings for the village. This could lead to many internal conflicts and interesting character development as they try to keep their true identity hidden while also trying to protect Konoha from threats they know about from their own village.