Minato might be a common character. Since he is Kushina's husband in the original story, his presence can add an interesting dynamic. Also, Jiraiya could be there. He was Naruto's mentor and his interactions with the harem situation could be quite humorous.
Some fanfictions might include Tsunade. As the Hokage, she could play a role in either approving or disapproving of Naruto's harem situation with Kushina. Shikamaru could also be a common character. His intelligence could be used to help Naruto navigate the complex relationships in the harem, or he could be a rival for Kushina's attention in a more comical way.
Minato could be a common character. Since he was Kushina's husband in the original story, his presence might add some interesting dynamics to the harem scenario. Another could be Jiraiya. His connection to Naruto and his reputation as a bit of a ladies' man could make for an interesting addition to the story.
Iruka could be one of the characters. He has always been important to Naruto, and he might try to help Naruto or at least be concerned about his exile. Kakashi could also appear. He has a connection to Naruto and might be conflicted about the situation. And then there are Naruto's friends like Sasuke and Sakura. Sasuke might understand Naruto's feeling of being an outcast more than others, and Sakura could be torn between her loyalty to the village and her friendship with Naruto.
Another theme is often the power dynamics. Kushina has her own strength, and in the harem situation, how her power and influence interact with the other characters in the harem is explored. For example, she might use her skills to protect those in her harem or gain more influence within the group. It also delves into how the other characters' powers play into the overall dynamic of the harem. There can be rivalries and alliances based on power levels.
Obviously, Naruto is a central character. Kushina herself often appears, either in flashbacks or in some magical - like resurrected form. Minato, Naruto's father, is also common as he is closely related to Kushina. Then there are Naruto's friends like Sasuke and Sakura. They might play different roles, for example, Sasuke could be more involved in helping Naruto understand his mother's side of the family.
Other characters like Kakashi or Jiraiya could potentially be part of the harem in some fanfictions. Their unique personalities would bring different elements to the story. Kakashi's cool and mysterious nature or Jiraiya's more carefree and perceptive self could interact with Kushina and the rest of the harem in various ways.
For Naruto, you could show his growth in terms of his leadership skills when he's with Naruko and Kushina. He could learn to be more patient and understanding, especially when Naruko might have a different approach to things. For Naruko, her character could be developed by showing her struggle to be recognized in a world where Naruto already has a reputation. Kushina could be developed by exploring her motherly side more deeply, as she interacts with both Naruto and Naruko.
Sakura could be quite intriguing. She has her own relationship with Naruto and Sasuke in the original story. In a harem fanfiction, she could be a bit jealous or supportive of Naruto's new harem situation. Tsunade is also a possibility. As the Hokage, she could have a unique perspective on Naruto's harem. She might be concerned about how it affects his role in the village or she could see it as a positive thing for his growth.
Sure. There could be fanfictions that explore the Naruto x Kushina relationship in a harem - like setting in a non - sexual way. Maybe they focus on things like friendship, teamwork, or shared goals among the characters in the harem. You might want to look on popular fanfiction sites and use the search filters to your advantage.
Aside from Kushina, Sakura could be a potential member. She might be attracted to Dark Naruto's new - found power and his different personality. Hinata could also be in the harem. Her gentle nature might be drawn to the complex and powerful Dark Naruto. Another could be Temari. Given her own strong - willed nature, she could be interested in Dark Naruto's power and his relationship with Kushina.
Jiraiya could also be one of the main characters. He was Naruto's mentor and had a connection with Kushina's family. He could play a role in helping them adjust to the time travel and also use their knowledge to his advantage in some ways, like getting intel on future threats.