Maybe Sasuke is being manipulated by an evil force that wants to get at Naruto through Hinata. Since Hinata is important to Naruto, targeting her would be a way to hurt Naruto.
Well, in one possible scenario, Sasuke might be under some sort of dark influence. Naruto, being the hero he is, senses Hinata is in danger from Sasuke. Naruto arrives just in time, using his newfound powers, perhaps a combination of Sage Mode and his Nine - Tails chakra. He blocks Sasuke's attack aimed at Hinata and then tries to reason with Sasuke, reminding him of their past friendship and how Hinata is an innocent bystander. Eventually, Sasuke relents and Hinata is saved.
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.
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.
Well, in the fanfiction, Naruto could save Ino from Sasuke by appealing to Sasuke's former friendship. Naruto might talk to Sasuke, reminding him of their days in Team 7 and how Ino is also their comrade, which makes Sasuke change his mind and let Ino go.
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.
Simple. Naruto is a hero at heart. He can't stand seeing anyone being hurt, especially his friends. Ino is his friend, so he has to save her from Sasuke.
One possible fanfiction scenario could be that Hinata, Sasuke and Naruto are on a difficult mission together. They start off with some tension due to Sasuke's past actions. However, as the mission progresses, they learn to trust each other more. Hinata might use her gentle nature to ease the situation between Naruto and Sasuke. Naruto's determination and Sasuke's skills combine with Hinata's support to make them a formidable team in this fictional adventure.
A really interesting one is 'The Unlikely Trio'. This fanfiction imagines a mission where Naruto, Hinata, and Sasuke are forced to work together in a very dangerous and isolated place. They have to rely on each other's strengths and overcome their differences to survive, which makes for a really engaging read.
One idea could be a story where Sasuke, Hinata and Naruto are on a joint mission. Naruto's cheerfulness, Hinata's gentle strength, and Sasuke's brooding nature create an interesting dynamic. They face a powerful enemy and have to learn to combine their unique skills, like Naruto's Rasengan, Hinata's Gentle Fist, and Sasuke's Chidori, to defeat it.