Naruko's friends would have a range of reactions. Her female friends might gather around her, giving her emotional support and advice. They would tell her to be strong and not let this forced marriage break her. The male friends, like Kiba, might be more ready to take action. They could try to intimidate those who are forcing the marriage. As for Sasuke's friends, they could be divided. Some might think this is a good opportunity for Sasuke to move on from his past and settle down. Others might worry that it will make Sasuke more withdrawn, as he might not be ready for such a commitment. They would all be watching the situation closely, ready to step in if things go wrong for either Naruko or Sasuke.
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.
Sasuke would probably be very against it. He has a strong sense of justice and would see this as completely wrong. He might directly confront those who are forcing Naruto into this situation.
The story could start with Naruko feeling completely trapped. She loves her freedom and suddenly being forced to marry Sasuke is like a nightmare for her. She might try to run away from the situation. Sasuke might also not be too happy about it, as he has his own past traumas and goals. However, as they are forced to be in close proximity, they might start to have small conversations. Through these exchanges, they begin to realize that they have misjudged each other in the past. Slowly, they could start to care for each other. Maybe Naruko starts to see the pain behind Sasuke's cold exterior, and Sasuke starts to admire Naruko's unwavering spirit. This could then develop into a deeper connection, changing the nature of their forced marriage into a more positive relationship.
She would probably be furious at first. Harry is known for her strong will, and being forced into a marriage, especially with Draco, would go against everything she believes in. She might try to fight it directly, using her magic skills to break free from whatever is forcing this marriage.
One reason could be political. Maybe the two clans or villages that Naruto and Sasuke are associated with want to strengthen their alliance. By marrying their most powerful members, they hope to ensure peace and cooperation.
Sasuke might want to get some information from Naruko. Maybe he suspects that she knows something about a threat to the Uchiha clan that he is trying to uncover.
Hermione's friends would have a range of reactions. Ginny might be sympathetic towards Hermione, understanding the difficult position she's in. Neville could be worried about how this would affect Hermione's studies and her role in the fight against the dark forces. For Viktor's friends, they might try to encourage him to make the best of the situation. His Quidditch teammates might see it as an opportunity for Viktor to show his maturity and handle a complex situation. However, some of his closer friends might also be worried that he's getting involved in something that could end badly for him.
On the other hand, there could be a small group of fans who are into very alternative and out - of - the - box interpretations. They might find it interesting from a shock - value or extreme - creativity perspective. However, this group would probably be in the minority. Most of the fan community would probably condemn such a fanfiction for being inappropriate and not in the spirit of the original source material.
In some fanfictions, their married life could be centered around training the next generation. They could take on students together and teach them the ways of the ninja. This plotline would show how they combine their different fighting styles and philosophies to train the young ones. It would also include their relationship development as they navigate through the challenges of being mentors while being a married couple.
He could be a bit jealous. Boruto has his own relationship with Sasuke as his mentor, and if Sarada is so interested in fanfiction about Sasuke, Boruto might feel like she's encroaching on his territory in a way. However, he would probably be too proud to admit it right away.