Sasuke could also be in it. If Sakura says something she doesn't mean to Sasuke, it could have a big impact on their relationship, which is already complex. Maybe her unmeant words make Sasuke question their friendship or his own standing with her.
Well, there could be Naruto. Since he's one of Sakura's closest friends in the Naruto universe. He might be the one who Sakura says something to, and then he could be confused or hurt by it. He could also play a role in helping her realize her mistake.
It could be that Sakura is in an argument and says something out of anger that she doesn't really mean. For instance, she tells a teammate that they are useless. The rest of the fanfiction might then focus on how she realizes her mistake, reflects on her anger management issues, and tries to earn back the trust and respect of her teammate.
It could be a male lead, like a charming and brave knight - in - training if it's in a medieval - like fantasy setting. He might be on a quest and needs Sakura's help, and after some persuasion, she finally says yes. And through their journey together, they develop a deeper connection.
There could be a kind wizard who tries to help Sakura turn back into a human. This wizard might be the key to solving the mystery of her transformation.
There could be her family members. Her parents might play a role in either supporting or not believing her new - found ability. And her siblings could be either jealous or in awe of her. Also, there could be a wise old man or woman in the village who has some knowledge about seeing the future and can guide her.
There could be Sakura's friends or comrades who might be affected by her decision to abandon the village. For example, Naruto or Sasuke could be characters involved. They might try to understand her reasons or even try to persuade her to come back.
There could be the prison guards. Some might be cruel and strict, while others could be more sympathetic. Also, other inmates. Maybe an older, experienced inmate who becomes a mentor - like figure to Sakura.
She could also be a bit nervous but still very positive. Her eagerness to make the date a success might be evident. Maybe she spends a long time choosing what to wear, trying to look her best. During the date, she might be a good listener, really interested in getting to know the other person better.
Another character could be a rival of Sakura who is the opposite of her in terms of shallowness. This person could be very down - to - earth and kind, and through their interactions, Sakura starts to feel ashamed of her own behavior. This rival could also be in a situation where they are more successful than Sakura because of their good nature, which makes Sakura question her own values.
Obviously, Sakura would be the main character. Her teammates like Naruto and Sasuke could also be important characters. Their interactions with Sakura would play a big role. Also, her sensei, like Kakashi, might be in the story to guide her. There could be other genin from the village as well, either as friends or rivals.
Obviously, Sakura's mother herself. And her family members like her parents or siblings if they are relevant to the story. They could have influenced her in different ways.