Naruto would be full of confidence and love when he asks Hinata. He knows she's the one for him. But at the same time, he might be a little worried about her reaction. Hinata, she would be in a state of pure bliss. All those years of unrequited love are suddenly turning into a beautiful reality. She would be so happy that she might not be able to find the right words at first, just a lot of nodding and smiling through her tears.
For Naruto, it's a big moment of vulnerability. He's putting his heart on the line, so there's a sense of fear of rejection, but also a deep love and determination. Hinata would be feeling a whirlwind of emotions. She'd be flattered, deeply in love, and probably a bit stunned that Naruto is actually asking her to marry him. There would be a lot of blushing and happy tears from her side.
Well, in this fanfiction, Naruto could be nervous as he asks Hinata to marry him. He might fumble with his words a bit at first. But once he gets going, he would talk about their journey together, from being classmates to comrades in battle. Hinata, on the other hand, would be in shock initially, but then her love for Naruto would shine through and she'd accept with tears of happiness in her eyes.
Hinata would probably be extremely shy at first. She might blush furiously and be at a loss for words. After all, she has had a crush on Naruto for a long time, so it would be a dream come true for her.
If he asks Hinata, she would probably be overjoyed. She has always been in love with Naruto, so her answer would most likely be an immediate 'yes' with tears of happiness in her eyes.
Hinata might be shocked at first. She has always adored Naruto, and this sudden act of aggression from him would leave her stunned and unable to process it immediately.
One great example could be a fanfic where Naruto plans a really elaborate date. He might take Hinata to their favorite childhood spot and then confess his feelings. Another could be a story where Naruto asks Hinata out during a big festival in Konoha. The bright lights and happy atmosphere add to the romantic moment.
The relationship would likely become more intimate. They'd have more time to just be with each other, sharing their thoughts and feelings without any rush. For example, they could have long conversations at night before going to sleep.
Naruto, being the energetic and battle - loving guy he is, would likely be on the edge of his seat, eager to see who comes out on top in each death battle. He might be making bets with himself about the outcomes. Hinata, with her gentle nature, would be a bit more subdued. However, she would also be intrigued. She might be more concerned about the safety of the fighters, even though it's just a fanfiction battle. And when a fight gets really intense, she might clutch Naruto's arm without realizing it, while Naruto is too engrossed in the action to notice at first.
One possible reason could be for the sake of creating a more complex love triangle in fanfiction. Maybe the writer wants to explore a different dynamic where Naruto and Hinata's relationship is strengthened by having a common dislike for Sakura. It could also be that the fanfiction writer is trying to give Hinata more agency and make her a stronger character by having her oppose Sakura in some way, perhaps in matters related to Naruto's affections.
He might feel extremely betrayed and angry. In some cases, he could cut off all ties with Hinata immediately. Naruto is a passionate character, and such a discovery would shatter his trust in her.
For Hinata, if she's actually innocent, she would be heartbroken that Naruto thought she could cheat. She might have to fight hard to prove her innocence. If she was at fault, she would likely face a lot of guilt and the loss of Naruto's love, which was something she deeply cherished. In the fanfiction world, this could also lead to changes in the social dynamics among their friends. Their friends might be divided, some believing Hinata and some believing Naruto's initial perception. It could create a rift in the whole group.