Some fanfictions have a plotline where Hilda visits the ninja world. She's like a fish out of water at first, but then she starts to understand the ninja way. She uses her magic in unique ways to help Naruto and his friends in their battles. And there are those stories where Naruto and Hilda are brought together by a prophecy to bring peace between their two very different worlds. It involves a lot of character development as they both grow and change to fulfill this prophecy.
A really cool plotline is when they get transported to a completely new world that is a mash - up of their own worlds. They have to figure out how to survive and get back home. Along the way, they meet new characters who are also a mix of the types of characters from their own universes, and it's full of surprises and unexpected alliances.
A plotline that stands out is when they are sent on a mission to an ancient ruin. There, they discover secrets about the ninja world's past. Naruto is eager to explore, Shikamaru is cautious about the potential dangers, and Choji is there for support. They have to solve puzzles and fight off ancient guardians.
A great plotline could be that Kakashi, in raising Naruto, reveals to him the true nature of the Fourth Hokage's sacrifice. This would not only deepen Naruto's understanding of his father but also give him a new perspective on his own life and purpose. Kakashi could then train Naruto to live up to his father's legacy in a more profound way.
There are some great plotlines in rinnegan naruto fanfics. For example, in 'Naruto's Rinnegan Awakening', the plot is centered around how Naruto awakens the rinnegan and how it changes his relationships with his friends and enemies. Some of his friends are scared of his new power, while some enemies see him as an even greater threat. In 'The Rinnegan and Naruto's True Purpose', the story is about Naruto realizing that his rinnegan gives him a new purpose in life, not just to protect the village but to unite all the shinobi clans. And in 'Rinnegan Naruto: Beyond the Limits', the plot follows Naruto as he pushes the limits of his rinnegan powers, going beyond what anyone thought was possible and facing the consequences of his actions.
A common and interesting plotline is Hinata saving Naruto in a unique way. In some fanfics, instead of the usual scenarios in the original series, Hinata uses new jutsus or strategies to rescue Naruto from a dangerous situation. It shows her growth and power.
One common theme is the clash of different cultures. Naruto comes from a world of ninjas with strict hierarchies and training, while Hilda has her own more magical and free - spirited world. Their interactions often explore how these different cultures can coexist or influence each other.
A common and interesting plotline is Kaa using his hypnotic abilities to protect Mowgli from danger. For example, in some fanfics, Kaa hypnotizes the other animals to keep them from harming Mowgli. Another is when Mowgli discovers Kaa's hidden knowledge of the jungle's secrets. It makes for a great adventure as they explore together.
One interesting plotline could be the mystery behind the mask. Maybe it has some special power that only Naruto can unlock or it could be related to an ancient prophecy. Another could be a new villain who uses the mask to create chaos in the ninja world and Naruto has to stop him.
Perhaps Naruto discovers a new medical jutsu that combines his chakra control with traditional medical knowledge. This could revolutionize the medical field in the Naruto universe. He might use it to heal previously incurable diseases or injuries, and in the process, gain the respect of the medical community. This could also lead to some interesting interactions with other medical ninja, like Shizune or Tsunade.
A common plotline is the 9 - Tailed Wolf teaching Naruto unique chakra control techniques. This gives Naruto an edge in combat.