Sure, there probably is. Fanfiction thrives on creativity and exploring different relationships and scenarios. A story about Vampire Naruto and Kushina falling in love could be a very creative and engaging piece. Some fanfiction writers like to blend different genres or concepts, like vampires into the Naruto world. So, it's very possible that such a fanfiction exists. You could try using specific search terms on fanfiction platforms to locate it.
In Naruto's case, if he has a connection to a vampire like Kushina, it could change his perception of the world. He might learn about the darker side of the ninja world that comes with the existence of vampires. His character could grow in understanding and become more accepting of different beings, which is in line with his overall kind - hearted nature.
Well, the plot could start with Naruto being turned into a vampire in some sort of accident or dark magic. Kushina, being the strong - willed woman she is, is initially repulsed but then gradually sees the good in Naruto even as a vampire. Their love could develop as they face challenges together, like fighting against those who want to harm Naruto because of his new vampire nature.
One good example could be a story where Kushina, being a vampire, has to hide her true nature in the Hidden Leaf Village. Naruto discovers her secret accidentally and they form an unlikely bond. This could involve Kushina teaching Naruto some unique vampire skills that come in handy during battles.
Another aspect could be that the fanfiction delves into how Kushina's presence affects Naruto's relationships with others. For instance, his relationship with Sasuke could be different. With a strong maternal figure in his life, Naruto might be more stable emotionally and be able to approach Sasuke in a more understanding way, which could potentially change the whole dynamic of their rivalry and friendship.
In some fanfictions, the authors might take creative liberties and create alternate universes where Naruto and Kushina interact in different scenarios. For example, they could be on a joint mission together, and through that, we see their personalities shine. Kushina's fiery nature and Naruto's determination would make for an interesting dynamic.
One possible fanfiction could be about Kushina finding Naruto in a situation where he's lost in a forest. Maybe she uses her unique chakra sensing abilities to track him down. It could be a heartwarming story of a mother reuniting with her son.
In certain fanfic concepts, Naruto could have found a special relic or artifact. This relic might have the power to reverse death. Since Naruto is always on adventures and exploring different places, he might stumble upon such an item and use it to revive Kushina. It could also be related to the Uzumaki clan's secrets that he uncovers which enables him to bring his mother back.
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.
One possible reason could be for Naruto's protection. Maybe she thought by banishing him from a certain place or situation, she could keep him away from a hidden danger that she knew about. For example, there might be a powerful enemy targeting Naruto specifically, and she believed that by making him leave, he would be harder to find.