One possibility is that Naruto and Naruko are on a mission to save the multiverse in this fanfiction. They travel through dimensions to collect some special artifacts or powers that are scattered across different realities. Along the way, they might face challenges from the rulers of those dimensions who don't want them to take those things. This could involve epic battles and the forging of new alliances as they strive to complete their mission.
It could be some powerful dimension - hopping villains who want to use the power of different dimensions for their own evil purposes. They might see Naruto and Naruko as threats to their plans.
He often meets versions of himself from different dimensions. These other Narutos might have different personalities or abilities due to the differences in their respective dimensions.
Perhaps Naruto travels to a dimension where everyone has a unique animal spirit companion. He has to bond with one of these spirits to gain access to certain powers. This would be a whole new experience for him as he's used to his own ninja world and its rules.
Kakashi could also be a character in 'naruto and naruko harem fanfiction'. He can be the mentor figure, guiding Naruto and Naruko through different situations. His wisdom can influence how the harem relationships develop, for example, by giving Naruto advice on how to handle multiple relationships in a proper way.
In this fanfiction, Naruto and Naruko's characters can be developed through their shared experiences. They could face discrimination or special treatment because they are twins. Naruto, who is used to being an outcast, might handle it one way, while Naruko could have a different reaction. This would lead to them growing as individuals and as a pair. They could also develop by learning from each other's mistakes. For instance, if Naruto rushes into a fight, Naruko could teach him the value of planning, and Naruto could show her the importance of believing in oneself no matter what.
At first, it might be a bit awkward. Naruto, not used to being a parent - like figure, would struggle a bit. But as time passes, they would grow closer. Naruto would become someone Naruko could rely on completely.
It might develop through shared battles. As Naruto uses his godlike powers in fights, Naruko sees his strength and determination, and she is drawn to him more.
Sakura could be a potential character. She has a long - standing relationship with Naruto, and in this harem scenario, she might be jealous of Naruko at first but then come to accept the situation. Hinata could also be part of it. Given her love for Naruto, she would be an interesting addition to the harem, adding a shy and gentle dynamic.
Sasuke is often paired with Naruko in these fanfictions. Their relationship can be explored in different ways, like they might start as rivals in this alternate universe too, but their bond develops into something more romantic or a deeper friendship. Another common pairing is with Kakashi. He could be her mentor in a more intense and personal way, guiding her not just in ninja skills but also in understanding the complex politics of the ninja world.