One storyline could be that Naruto joins Kabuto to gain access to some special power or knowledge that Kabuto claims to possess. Naruto believes it can help him protect the village better.
Perhaps Naruto joins Kabuto in order to infiltrate a group that Kabuto is associated with. Naruto pretends to be on Kabuto's side while secretly gathering information for his village. Along the way, he has to constantly avoid being discovered by Kabuto and also deal with the moral implications of deceiving someone, even if that someone is as morally ambiguous as Kabuto.
A possible storyline is that Kabuto manipulates Naruto into joining him by creating a false scenario where it seems like the only way to save the world is by working together. Naruto, being naive in this situation, goes along with it. Then, as the story progresses, Naruto discovers the truth and has to find a way to break free from Kabuto's influence.
Well, one possibility is that Naruto might initially be deceived by Kabuto. Since Kabuto is quite cunning. Naruto could be led into situations that are against his normal moral code, but eventually he might realize Kabuto's true intentions and try to turn things around.
One storyline could be that Sakura tries to reform the Akatsuki from the inside. She might use her knowledge of Konoha's values and her own strong will to change the way the group operates.
The most immediate consequence would be a huge blow to the morale of Konoha. Naruto is like a symbol of hope. His death would likely make the villagers feel very vulnerable.
A potential plot twist could be that Zabuza has a hidden agenda for allowing Naruto to join him. Maybe he plans to use Naruto as a pawn against the Hidden Leaf Village, which would create a huge moral dilemma for Naruto.
One possible storyline could be that Meowth helps Ash find a rare Pokémon. Since Meowth has his own network among Pokémon, he might hear rumors about a very special Pokémon. He then takes Ash to the location, and they have an epic adventure trying to catch it. Another storyline could be that Meowth and Ash team up to take down a new evil organization that's causing trouble in the Pokémon world.
In a 'Naruto meets Konan' fanfiction, there could be a time - travel plot. Naruto somehow gets sent back in time and meets a younger Konan. He tries to prevent some of the tragedies that happened in her life, like the death of Yahiko. This changes the future and creates a whole new dynamic between Konoha and Amegakure.
There could also be a storyline where they discover a hidden mystery in the village. Naruto's adventurous spirit and Ino's sharp mind would be perfect for investigating. As they live together and share their thoughts and ideas, they piece together the mystery. It could be something related to an ancient jutsu or a secret about the founding of the village. Their relationship would grow as they rely on each other to solve this mystery and protect the village.
Another potential storyline is a time - travel based one. Kara somehow travels back in time to Naruto's era. She has to keep her identity a secret while also trying to find a way back home. In the process, she befriends Naruto and helps him in some of his battles, using her superpowers in a discreet way. Naruto, in turn, helps her adapt to his world's way of life.
Perhaps there could be a storyline where Naruto and Anko enter a local tournament in Konoha. They would train hard together for it and during the process, their bond would grow stronger. They might face some tough opponents in the tournament, and their combined skills would help them progress through the rounds.
One potential storyline could be a race against time. A powerful alien artifact has landed in their city and both Spiderman and Shadow want to get to it first. Spiderman wants to keep it safe from falling into the wrong hands, while Shadow believes it could be the key to achieving his own goals. Along the way, they face various obstacles and start to respect each other's abilities.