Well, one way it could develop is that Naruto initially resists the marriage. He might be angry at being forced into it and try to find a way out. But as time goes on, he starts to see Hinata's good qualities, like her kindness and loyalty. Maybe he begins to understand that there could be something good about this arranged situation.
Kakashi would probably be a bit concerned. He cares about Naruto like a student and a son. He might talk to Naruto privately and tell him to give it a chance. At the same time, he could also have a word with Hinata's family if he feels the forcing is too much. As for Sakura, she might be a bit jealous at first, but then she would realize that Hinata is a good person and try to encourage Naruto to be more open - minded towards the marriage.
It could be a character from another important ninja clan, like Hinata perhaps. Since Hinata has always had feelings for Naruto and her clan is also a significant part of the village, Minato might see it as a good match.
Another way is to join fanfiction communities or forums dedicated to Naruto. Ask the members for recommendations. They can point you to some great stories that don't involve any forced relationships. Some members might even have their own collections of fanfictions that they can share with you, which are often carefully curated and free of inappropriate content.
It could be someone from a rival village. Maybe as part of a peace treaty, Naruto is forced to marry a kunoichi from a village that was once at war with Konoha. This would create a lot of tension and interesting storylines as Naruto has to deal with the cultural differences and the past hostilities between the two villages.
They can be popular. Fans of the Naruto series often like to see different takes on the relationships between the characters. Since Naruto and Hinata have a complex relationship in the original series, the concept of a 'forced' relationship in fanfics allows for new storylines. For instance, it can show how they overcome obstacles that are different from what they faced in the canon story, making it interesting for those who want to see alternative versions of their story.
At first, Naruto would be in disbelief. She has always seen Sasuke as a friend or a rival, not a marriage partner. So, she would likely be very vocal about her opposition. She might gather her friends, like Sakura and Kakashi, to support her cause. She could also try to appeal to Sasuke's sense of justice. Since Sasuke has his own code of ethics, he might also not be happy about this forced situation. Naruto could use this to try and find a way to break free from this unwanted marriage.
Sakura could be a potential partner. Since they are friends from the original series, a forced marriage situation between them would bring a whole new dynamic. There would be a lot of room for exploring their relationship beyond just friendship.
It's completely inappropriate. Naruto and Hinata are characters from a popular anime, and writing fanfiction with such disturbing and unethical content violates the spirit of the original work and basic moral principles. Fanfiction should be a platform for positive creativity, not for spreading inappropriate and offensive ideas.
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.