A possible plotline is that Kushina is the center of a prophecy and Naruto is fated to be part of her harem. This could bring in elements of different clans trying to influence the situation. Maybe the Uchiha clan wants to use Naruto's relationship with Kushina to their advantage, while the Hyuga clan also has their own motives. Naruto then has to deal with the politics of the ninja world while also handling his feelings for Kushina and the other characters in the harem - all of which can make for a really engaging fanfiction.
One interesting plotline could be Naruto being transported back in time to when Kushina was young and him having to navigate a harem situation while also trying to change the future for the better. Another could be an alternate universe where Kushina is in a position of power and Naruto has to win her over among a group of suitors in a harem-like setting.
Well, in some naruto x kushina harem fanfictions, there might be a plot where Naruto discovers a hidden power within himself that is linked to Kushina and this attracts a harem of characters. For example, some shinobi might see this new power as a sign of great potential and they become part of Naruto's 'harem' in a way, all while his connection to Kushina deepens. It could lead to adventures where they all have to work together and Naruto has to balance his relationships.
One interesting plotline could be exploring how they first fell in love. Maybe it was during a training session where Naruto showed his determination and Kushina was drawn to that. Another could be them facing challenges together, like dealing with the village's disapproval of their relationship at first.
One possible plotline could be an alternate universe where Futa Kushina has unique ninja abilities that she uses to protect Naruto in a different way than in the original story. Maybe she has some special time - space jutsu that allows her to foresee and prevent certain threats to Naruto.
Another plotline could involve the challenges they face from the village. People might have different opinions about the union, some seeing it as a strategic move while others might be jealous or against it for various reasons. They would have to deal with the gossip and political implications within Konoha.
One possible plotline could be Naruto going on adventures with Hana and other members of the harem, facing new enemies together. Maybe they have to protect their village from a mysterious threat while also dealing with the complex relationships within the harem.
One interesting plotline could be Naruto going on a mission to Kumogakure and getting involved with multiple Kumo ninjas in a friendly way that gradually turns into a harem situation. For example, he might help them with a local threat and in the process, they all develop feelings for him.
A plotline where Naruto, Kushina, and Mikoto are involved in a time - travel scenario can be really cool. They could go back in time and change certain events in the Naruto universe for the better. For example, they might prevent some of the tragedies that occurred in the original story, and in the process, develop a stronger bond as a group.
One possible plotline could be Kushina getting to train Naruto personally. Since she was a powerful kunoichi, she could pass on her unique skills and knowledge. This would make Naruto even more formidable at an earlier stage. Another plotline might involve Kushina's influence on Naruto's relationships. For example, she could have a big impact on how Naruto interacts with Sasuke, perhaps helping to prevent some of the rifts that occurred between them in the original story.
One possible plotline could be Kushina's reunion with Naruto and how she uses her skills and wisdom to help him in his battles. For example, she might teach him some new jutsu that only she knew. Another plotline could involve Kushina exploring the new ninja world that has changed so much since her time. She could interact with characters like Sasuke and Sakura, and have an impact on their development as well.
Another plotline might involve Kushina being brought back to life and getting to know Naruto as a young man. As she spends time with him, she discovers his determination and the way he has grown despite his hardships, which makes her develop feelings for him. For example, she could see how he interacts with his friends and how he's always there to protect them, and that could draw her to him.
One possible plotline could be Naruto exploring his mother's past in more detail. Maybe he discovers some hidden jutsu or secrets that Kushina left behind. Another could be his relationship with his parents in a more in - depth way, like how they would have raised him if they were alive.