A possible plot could be that there is a prophecy about Demon Naruto and Kushina. They have to work together to fulfill this prophecy which involves saving the ninja world from a great disaster. Along the way, they face many challenges. Kushina helps Naruto come to terms with his demon side, and Naruto uses his power to protect Kushina from the various threats they encounter. Their relationship evolves as they struggle to complete their task.
Well, perhaps Demon Naruto has some sort of special connection to Kushina that is related to his demonic powers. For example, her Uzumaki bloodline might be the key to controlling or understanding his demonic side better. And they could go on a journey to discover the secrets of his powers together.
Another plot could be a 'what - if' scenario. What if Kushina didn't die? Naruto grows up with his mother around. The story could explore how Kushina helps Naruto train, not just in ninjutsu but also in understanding his Uzumaki heritage. It could also show how their relationship affects Naruto's relationships with others in the village, like how he might be more confident with Kushina's support.
One idea could be a time - travel plot where Naruto, Naruko (presumably a female version of Naruto), and Kushina are all brought together in a different era. They could team up to face a new and powerful enemy that threatens the very existence of their clan or the village. Another could be a story where they are all in a training session together, with Kushina teaching the two younger ones some of her unique ninja techniques.
One interesting plot could be that 'dark kushina' initially tries to manipulate Naruto for her own goals but gradually develops real feelings for him as she gets to know him better. Another could be that they are forced to work together to save the Hidden Leaf Village from a powerful enemy.
Perhaps in this fanfiction, Naruto discovers a hidden ability that was passed down from Kushina. They go on a journey together to learn more about this power and how to control it. This would involve a lot of training sessions and some heart - to - heart conversations between mother and son.
Maybe in the fanfiction, Naruto discovers a hidden part of his chakra that has a special link to young Kushina. This link allows them to communicate telepathically. They then use this connection to share secrets about their respective lives, and Naruto learns more about his mother's past and her dreams when she was young.
Well, a story could be centered around Naruto having prophetic dreams about Kushina. These dreams lead him to explore more about his mother's past and in doing so, he uncovers secrets that strengthen his connection with her. They could also be in a situation where they have to enter each other's minds to fight off an evil entity that's attacking their mental states.
One idea could be a story where Kushina, with her connection to the Nine - Tails, helps the fem Kyuubi (in a more human - like form perhaps) and Naruto to understand each other better. Maybe they all have to work together to defeat a new threat that targets the unique bond between Naruto and the Kyuubi. Another plot could involve the fem Kyuubi having some sort of past connection with Kushina that gets revealed as they interact with Naruto, leading to a deeper understanding of their intertwined fates.
One idea could be that Demon Naruto has to protect Hinata from dark forces in the ninja world. Since he has demon powers, he has unique abilities to fend off threats. Another could be that Hinata's gentle nature starts to tame the demon within Naruto, leading to a transformation in his power and personality. Maybe there could also be a plot where they go on a journey together to find a way to fully control Naruto's demon side without losing his humanity, and during this journey, they fall deeper in love as they face various challenges.
One plot idea could be that Demon Naruto is on a quest to regain his humanity and Ino, with her mind - related abilities, tries to help him. She might be the only one who can reach the part of him that is still Naruto beneath the demon exterior. Another could be that they are forced to team up against a common enemy that is threatening the Hidden Leaf Village. The demon powers of Naruto give them an edge in battle, but they also attract unwanted attention.