Well, their friendship is like a foundation. Naruto, having known Hinata for a long time, values her. In the situation where he has to save her from Hiashi, his friendship is what pushes him to put himself in harm's way. He remembers all the times they've shared, the support Hinata has given him in the past. This makes him determined to return the favor and protect her. It also means he's more likely to understand Hinata's perspective and try to resolve the issue between her and Hiashi in a way that benefits her in the long run.
In some fanfictions, Naruto might use his newfound jutsu skills. He could quickly dash in between Hiashi and Hinata, using his speed and agility to block any attacks Hiashi might be launching towards Hinata. His Rasengan in his hand, ready to defend if Hiashi doesn't back down. This shows Naruto's determination to protect Hinata from any harm, even from her own father in this fictional scenario.
In this fanfic, Naruto might save Hiashi in a battle situation. Maybe Hiashi is facing a powerful enemy that he can't handle alone, and Naruto steps in with his strong ninja skills. For example, if Hiashi is being attacked by a group of rogue ninjas, Naruto could use his Rasengan to fend them off.
Maybe Hiashi thinks Naruto fanfiction might contain inappropriate or untrue portrayals of the Naruto world and characters. He wants to protect Hinata from being influenced by such potentially inaccurate or improper content.
Hinata saving Naruto from Pain in fanfiction can take on many forms. It could be that Hinata has been secretly training and has a new set of abilities that she unleashes to save Naruto. This not only changes the course of the battle but also the dynamics between the characters. Fanfic writers might also add some emotional elements, such as Hinata's inner thoughts and feelings during the rescue. This makes the story more engaging and gives readers a fresh perspective on the Naruto - Hinata relationship.
She might be disappointed at first. Since she is interested in Naruto, she may have been curious about the fanfiction as well. But being the obedient daughter she is, she would probably respect her father's decision.
Maybe Hiashi is poisoned, and Naruto has to find an antidote. He could go on a journey to find a rare herb or seek the help of a medical ninja. Along the way, he might face various obstacles, but his will to save Hiashi would keep him going. He could also use his connection with the Nine - Tails' chakra to boost his search or fight against any threats.
Once upon a time, Hinata was being bullied near the training grounds. The bullies were taunting her about her shy nature. Just as they were about to get physical, Naruto showed up. He remembered all the times Hinata had been kind to him. 'You guys think it's cool to pick on someone smaller?' Naruto asked. The bullies tried to act tough but Naruto's presence was too much for them. He then turned to Hinata, 'Don't let them get to you. You're strong, Hinata.' And from that day on, Hinata felt a little braver knowing Naruto had her back.
Often, Naruto's status as a hero in the fanfiction world plays a big role. The Kumo ninjas might be a bit intimidated by him. He might start by making a grand entrance, shouting out his intentions to save Hinata. His reputation precedes him. Then he uses his Nine - Tails chakra, which gives him a significant power - up. He uses this enhanced power to fight off the Kumo ninjas who are holding Hinata captive and finally saves her.
There are fanfics that focus on a political alliance between Naruto (as a future Hokage) and Hiashi. Hinata is caught in the middle of this in a way that she has to prove her worth not just as a Hyuga but also as someone who can stand beside Naruto. In these types of fanfics, there's often a lot of character development for all three as they navigate through the complex world of shinobi politics.