Well, a possible plot for Naruko and Kyuubi fanfiction is that the Kyuubi's power starts to merge with Naruko in a way that gives her new and unexpected abilities. She could then use these abilities to change the way the ninja world views her. Maybe she becomes a symbol of hope for those with tailed beasts within them. Another plot could be that Naruko has to enter the Kyuubi's mindscape to help it heal from some old wounds. In doing so, she learns about the Kyuubi's past and how it came to be so feared. And finally, they could go on a journey together to find a lost artifact that has the power to either free the Kyuubi completely or bind it more tightly to Naruko, depending on how they choose to use it.
A plot for Naruko and Kyuubi fanfiction could be that the Kyuubi, for some reason, starts to communicate with Naruko through her dreams. In these dreams, it shows her visions of the future that she has to prevent. As she tries to make sense of these visions, she realizes she needs to work more closely with the Kyuubi. Another idea is that there is a curse on the Kyuubi that is slowly spreading to Naruko. They have to find a way to break the curse together. This could involve seeking out a hermit or an ancient scroll. Also, Naruko could try to teach the Kyuubi about human emotions and values, which in turn helps the Kyuubi to better control its power and become more of an ally to Naruko.
One interesting plot idea could be that Naruko discovers the female Kyuubi has a unique power that can help her in a difficult battle against a powerful enemy. For example, the female Kyuubi might be able to sense the enemy's weaknesses and communicate them to Naruko telepathically.
One plot idea could be Naruko and Sakura going on a mission together in a new and dangerous area, and they have to rely on each other's unique skills to survive. Another could be them having to deal with a misunderstanding within the village that threatens their friendship.
One idea could be exploring the bond between Naruto and the Kyuubi in a new way. For example, they could have a shared dream where they are in a strange, alternate world and have to work together to find a way back. Another plot could involve Naruto using the Kyuubi's power to save a village from a new, powerful enemy that no one else can defeat. And a third could be about the Kyuubi revealing a long - lost secret about Naruto's family that changes his perspective on his own powers.
One idea could be that Sasuke and Naruko are on a mission together when they find out about the pregnancy. This unexpected news forces them to re - evaluate their ninja lives and how they will protect their future family while still fulfilling their duties to the village.
One idea could be a story where Naruto, Naruko, and Menma have to team up to face a new and powerful enemy that threatens the Hidden Leaf Village. They might have to combine their unique skills and overcome their personal differences to succeed.
One idea could be that the baby has some unique powers inherited from both Naruko and Sasuke. For example, the ability to control both fire and wind in a new and unexpected way. This could lead to various adventures as they try to protect the baby from those who might want to use its power for evil.
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.
A plot could revolve around the clones being sent on a special mission. Since they are clones, they might not have all the emotional baggage of the originals. They could approach the mission with a fresh perspective and use their combined skills in new and unexpected ways. Maybe they have to infiltrate an enemy base, and their ability to think like Naruto and Naruko but also act independently gives them an edge.
One idea could be that Dark Naruto has to face his inner demons while Naruko tries to save him. Maybe there's a villain who is trying to manipulate Dark Naruto's power for evil purposes and Naruko discovers this and has to fight both the villain and convince Dark Naruto to resist the dark influence.
One idea could be a new character arrives at the school who has a unique power that disrupts the existing power balance among the student groups. Another could be a time - travel plot where a character goes back in time to change an important event in the Highschool DxD universe. Maybe a crossover with another popular anime, where characters from both shows interact in the Naruko Highschool DxD setting.