A great storyline could be Sora having a special power that is coveted by Orochimaru. Orochimaru would try to capture Sora to use his power for his own evil purposes. Sora would then have to rely on Naruto and his friends to protect him and defeat Orochimaru. It could also involve Sora learning about the ninja way from Naruto and growing as a character.
One possible storyline could be Sora trying to find his place in the ninja world. Since he's not from the traditional ninja families in Naruto, he might struggle to be accepted. Another could be him being involved in a mission to stop a new evil that targets both his world and the Naruto world. This would force him to team up with Naruto and the others.
Well, Sora could potentially be a new type of ninja. Maybe he has some unique jutsu that the Naruto world has never seen before. For example, if he has powers related to light, he could use it in combat against the various villains in the Naruto universe like the Akatsuki. His character could also bring in new storylines, such as his origin being a mystery that Naruto and his friends have to uncover.
Well, there could be a story where Naruto, after learning about Thor, dreams of becoming as powerful as him. He goes on a quest to find artifacts or powers that are similar to Thor's. Along the way, he meets other characters from both the Naruto and Marvel universes who either help or hinder his journey. This could lead to many interesting interactions and battles, as Naruto tries to prove himself worthy of being like Thor in his own way.
One possible storyline could be Naruto joining Fairy Tail and having to prove himself to the guild. He'd use his wind mage powers to take on quests and fight against dark guilds. Another could be him facing off against a powerful wind - based enemy in the Fairy Tail world and having to learn new techniques to defeat them.
Perhaps the baby's existence could be a catalyst for peace between Konoha and the Hidden Mist. The two villages, which had a history of conflict, could see the baby as a symbol of a new beginning. The story could revolve around Naruto and Haku trying to raise the baby while also navigating the political tensions between the two villages, and how they work towards a more unified ninja world.
The story could start with Naruto already being a well - known figure in his world with the rinnegan. A strange phenomenon occurs that links his world to the RWBY world. When he arrives, he's initially confused but quickly realizes he can use his skills to help. He might teach the RWBY characters some of his ninja techniques, like stealth and misdirection, while also learning about Aura and Semblance from them.
In this fanfiction, a great storyline could be that Naruto and Joramun are seen as prophets or saviors by a small group of people in Westeros who are tired of the constant war and power struggles. They try to spread their message of peace and cooperation, but are opposed by the major houses who see them as a threat to their power. As they journey through Westeros, they also discover secrets about the land that could change everything. Maybe there are ancient powers that Naruto's chakra can interact with, and Joramun has some knowledge about these from his own world. This would create a complex and exciting story full of twists and turns.
One creative storyline could be that Naruto and Megaman team up to fight a new enemy that has the ability to steal both ninjutsu and robot powers. They would have to combine their unique skills to defeat this powerful foe.
One interesting storyline could be that Naruto and his friends somehow end up in the Voltron universe. They might team up with the Voltron paladins to fight a common enemy. Naruto's ninja skills could add a new dimension to the battles. For example, his shadow clone jutsu could be used to create diversions during a fight against a large Galra force.
Perhaps in this fanfiction, there is a dark prophecy that Naruto misinterprets as Konoha being the source of all evil in the ninja world. So, in his attempt to 'save' the world, he decides to destroy Konoha. Also, it could be that an evil entity has merged with Naruto, and the combined power has a grudge against Konoha for some past event.
One interesting storyline could be where Pokémon trainers from the Pokémon world end up in the Naruto universe. They might use their Pokémon to help in battles against the Akatsuki. For example, a Pikachu could use its electric attacks to counter some of the Akatsuki's jutsu that involve lightning - based defenses. Another could be Pokémon being used in the Chunin Exams, adding a whole new level of chaos and excitement.