One interesting fanfiction could be about Kakashi training Sakura in a new and unique jutsu. Maybe it's a jutsu that combines her medical ninjutsu with some powerful offensive capabilities that Kakashi has mastered. This would not only strengthen Sakura but also show the bond between teacher and student.
A really cool fanfiction could be set in an alternate universe where Kakashi is younger and Sakura is from a different village. They meet during a ninja tournament and initially see each other as rivals. But as the story progresses, they start to respect and learn from one another, leading to an unexpected friendship.
There might be a fanfiction where Sakura and Kakashi are on a mission together without Naruto. They encounter a powerful enemy that forces them to rely on each other's skills in ways they haven't before. Sakura's intelligence and medical skills, along with Kakashi's combat experience and Sharingan, would make for an exciting story.
One interesting Kakashi and Sakura fanfiction could be where Kakashi takes Sakura on a special training mission outside of Konoha. He teaches her some unique jutsu that she hadn't been able to learn from Tsunade. This fanfiction could explore their mentor - student relationship in a new light.
One interesting plot could be a story where Sasuke and Sakura have a child, and Naruto and Kakashi become like uncles to the child. They all live in the same village and face new threats together, with the new generation learning from the old. For example, the child might inherit Sasuke's sharingan and Sakura's medical skills, and Naruto and Kakashi help train the child to be a great ninja.
Imagine a fanfiction where Sakura, instead of being in love with Sasuke, has feelings for Naruto all along. This would completely change the love triangle aspect and lead to a lot of interesting interactions between the three main characters. It could also cause Sasuke to re - evaluate his relationship with his teammates.
There are fanfictions where Kakashi and Naruto time - travel. They could end up in the past, during the era of the First Hokage. This would change the course of history as they know it and they'd have to figure out how to get back while also dealing with the different political and ninja situations of that time.
One interesting Kakashi and Naruto fanfiction could be about Kakashi training Naruto in a unique way that involves ancient ninja techniques not shown in the original series. This could explore Naruto's growth in a different aspect.
There might be a fanfiction where Naruto and Kakashi are sent on a secret mission together. They face many challenges along the way, like dealing with powerful enemies and difficult terrains. This story could explore how they rely on each other's skills. Kakashi's experience and Naruto's determination work in tandem to complete the mission successfully.
A great fanfiction idea might be a story that delves into an alternate universe where Kakashi was the one who fell into the dark side instead of Obito. This would completely change their dynamic. Obito would then be the one trying to save his former friend, and it could explore themes of redemption and the power of their bond in a very different context.
One interesting story could be about Kakashi finding an abandoned pup in the forest near Konoha. The pup might have some special abilities that are connected to Naruto's own power, like being able to sense the Nine - Tails' chakra. Kakashi decides to take the pup under his wing and train it, just as he trains Naruto.
One interesting fanfiction could be about Sasuke and Naruto going on a special mission with Kakashi as their guide. They face a powerful new enemy and have to rely on their combined skills and the wisdom Kakashi imparts. It might involve Sasuke using his Sharingan in new ways, Naruto's new jutsu, and Kakashi's strategic thinking.
One great Kakashi and Sakura fanfiction could be one where they go on a mission together and Sakura gets to show Kakashi her advanced medical ninjutsu skills. It might have a plot where they encounter a difficult enemy and Sakura uses her knowledge to save the day while Kakashi is impressed by her growth.