Perhaps Hinata has been training hard to become stronger while Naruto was away. When Naruto returns, she challenges him to a spar. During the spar, Naruto realizes Hinata's newfound strength and determination. This could lead to him seeing her in a new light and the start of a romantic relationship as they train together more often.
The age difference can add a sense of protectiveness. Naruto, being older, may feel the need to shield Hinata from harm. For example, he might take on more dangerous missions to keep her safe in the village.
Another plotline might be exploring Naruto's past more deeply. Maybe there are secrets about his parents that were never fully revealed in the original. In the fanfiction, he could discover something new about his father's time as Hokage or his mother's Uzumaki heritage that changes his perspective on his own powers and responsibilities.
I really like 'The Unlikely Pairing'. It focuses on how Inuyasha, being older, feels a sense of protectiveness over Kagome. The story shows Kagome growing and maturing in the face of Inuyasha's gruff exterior yet tender heart. It's a great read if you like character - driven fanfictions with an age - gap relationship.
Another one to check out is 'Age - Defying Love'. It delves deep into the idea of how an age gap can both strengthen and complicate a relationship. The story has some really touching moments where Edward's age - related wisdom helps him deal with Bella's insecurities in a way that is unique to their relationship.
One great fanfiction could be about how Makoto, being older, takes Ren under her wing. She could help him navigate the complex world of the Metaverse. Maybe she teaches him some of her combat skills and strategies.
Fanfiction should generally promote positive values. Content related to sexual themes in the context of 'older younger' relationships, especially in the furry genre which involves anthropomorphic characters, is not suitable for public consumption and violates ethical boundaries. It can also be disturbing and offensive to many people.
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.
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.
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.