Well, obviously Naruto and Naruko are the main characters. Naruto is the well - known protagonist from the original Naruto series, and Naruko is his female counterpart in this fanfiction concept.
In some fanfictions, they could meet during a time - travel incident. Naruto from the present meets Naruko from the past or vice versa. They then exchange knowledge about the future or past events, which changes the course of their own timelines. This could lead to some really interesting character development as they both try to adapt to the new information and how it affects their relationships with their friends and family.
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.
It could be a jealous gamer who is envious of Naruko's skills and Naruto's natural talent. This antagonist might try to sabotage their progress in the game by hacking or spreading false rumors within the gaming community in the fanfic.
One possible plot could be that Naruto and Naruko enter a virtual gaming world where they have to team up to defeat a powerful in - game boss. Since Naruto is known for his determination and combat skills, and Naruko might bring some unique strategic thinking as a gamer. They start with some initial clashes due to their different approaches but gradually learn to work together and become a formidable duo in the game.
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.