You could also try reaching out to Naruto fan communities on social media platforms like Reddit or Tumblr. There are often groups dedicated to sharing and discussing fanfiction. Someone in those communities might be able to recommend some really good Naruto and Hinata fanfics that they've come across.
Another place to look for Naruto and Hinata fanfiction is Archive of Our Own (AO3). It has a wide variety of fan-created works. You can use the search filters to find the ones that are exactly what you're looking for. Maybe you'll find some that explore their relationship in different AU (alternate universe) settings, like a modern - day AU or a fantasy AU.
One great source for Naruto and Hinata fanfiction could be FanFiction.net. You can search for stories specifically focused on their relationship there. There are often new and interesting takes on their story, from how they first fell in love to their married life in the future.
Ask other Naruto fans directly. You can join Naruto - related Discord servers or Facebook groups. Post a request asking for Missing Naruto and Hinata fanfiction. Fans are usually very helpful and they might share their favorite stories with you. They could also give you tips on how to search more effectively, like using specific tags or keywords that are relevant to the kind of fanfiction you want.
Another idea is that Naruto and Hinata go missing - nin to explore a dark power that is threatening the ninja world but is being ignored by their village. They sacrifice their status in the village to do what they think is right. Their relationship deepens as they face the difficulties and moral dilemmas together.
One plotline could be Naruto realizing how much Hinata means to him when he's on a long and difficult mission. He might be constantly distracted, thinking about their shared moments, like when she confessed her love during the Pain attack. Another could be Naruto in an alternate reality where Hinata is missing, and he has to search through different dimensions to find her, facing many challenges along the way.
In many of these fanfictions, the danger they face as missing - nin forces them to communicate on a deeper level. Hinata, who has always been shy around Naruto, becomes more assertive in expressing her feelings. Naruto, in turn, becomes more protective and understanding of Hinata. They grow together through the various challenges like fighting off other ninjas who are after them.
It could be Orochimaru. He's always been interested in Naruto's power, especially the Nine - Tails within him. He might have come up with a new devious plan to capture Naruto and use his power for his own dark experiments.
In some Naruto fanfictions, Hinata could potentially be portrayed as a 'weapon' in a very metaphorical sense. For example, her Byakugan abilities might be exploited in unique ways that make her seem like a strategic weapon for a side or a cause. But in the canon Naruto story, she is a character with her own agency and not really a weapon.
It could be a former Leaf Village ninja who left due to some sort of disagreement. Maybe someone who didn't agree with the village's leadership or its way of training young ninjas.
Perhaps in the fanfiction, Hinata wears a micro bikini for a special festival in the Hidden Leaf Village. Naruto is really excited to see her in it. They participate in the festival games together and Hinata's new look makes Naruto see her in a different light, more as a strong and confident woman.
One possible fanfiction could involve Naruto learning kenjutsu skills and Hinata being inspired by his newfound abilities. Maybe Naruto discovers an ancient sword technique and Hinata supports him in his training, leading to a deeper bond between them.
Well, in a lot of Naruto and Hinata soulmates fanfiction, they are indeed. The way Hinata has always been there for Naruto, believing in him even when others didn't, makes for a great soulmate story. Fanfiction writers love to expand on their relationship, showing how they understand each other on a spiritual level. It's like they complete each other, with Naruto's boldness and Hinata's gentleness.