Naruto would be confused. He's grown up believing that the village is his home and the villagers are his family, at least in a sense. So when they start torturing him, he can't understand why. This confusion would mix with his pain and anger. He might also feel a sense of loneliness that is deeper than anything he's ever felt before. Even though he has friends like Iruka - sensei, the fact that the villagers as a whole are against him would make him feel isolated. However, his inner hope and the belief that things can change would keep him from completely breaking down.
One possible plot could be Naruto finding a way to overcome the hatred of the villagers through his own strength and determination. Maybe he starts to show his true power and gradually makes the villagers realize their wrongdoings.
He would probably be very lonely. Without a family, Naruto has no one to turn to in the most basic sense, which would lead to a deep - seated loneliness.
One possible reason could be fear. Naruto has the Nine - Tails inside him, and the villagers might be so afraid of the power of the Nine - Tails getting out of control that they decide to take extreme measures. They might see Naruto not as a person but as a potential threat that needs to be eliminated.
It could also be a situation where Naruto is framed for a crime he didn't commit by someone in the village. As a result, the villagers turn on him even more, and in his self - defense and anger, he ends up fighting back and killing some of them.
Kushina would most likely experience deep remorse. Remorse for not being there for Naruto when he needed a mother. There could also be a sense of longing in her, longing to be part of Naruto's life and to make up for all the lost time. And of course, she might be filled with self - loathing for her past actions.
The fanfiction could explore the backstory of why the villagers torture Naruto. It could be that some evil influence, like a hidden group within the village or a curse, is making them act this way. Naruto, being the strong - willed person he is, might try to uncover this mystery. He would use his detective skills, similar to when he solved various missions. As he gets closer to the truth, the torture might intensify. But Naruto's resolve would not break. He could also find unexpected allies, perhaps some of the older ninja who remember a time before the village turned against Naruto, and they would help him fight against the forces that are causing this unjust treatment.
One possible plotline could be that the villagers, out of long - held fear and jealousy of Naruto's growing power, band together in a mob. They might ambush Naruto when he is least expecting it, perhaps on his way back from a mission. Another could be that they are influenced by a powerful and evil - minded individual who manipulates them into believing Naruto is a threat to their safety.
Naruto could develop into a more vengeful character at first. The continuous torture by the villagers might make him angry and want to get back at them. But as the story progresses, he might realize that revenge is not the answer and instead focus on making the village a better place for everyone, including himself.
Naruto would likely experience a range of emotions. He could be in denial at first, not wanting to believe that this disease could end his life. Then there would be sadness, thinking about all the things he might not be able to achieve. He'd also feel guilty for making his friends worry. And there would be moments of anger, directed at the unfairness of getting such a disease.
One possible scenario could be that Naruto is constantly taunted in the streets. The villagers might throw things at him or call him mean names, like 'demon brat'. Another could be that they exclude him from village activities, making him feel like an outcast.