Well, perhaps in this fanfiction, Hinata is forced into a situation by some outside influence, like a villain's mind - control, which makes her act in a way that causes Naruto to cry. After she breaks free from the control, she is filled with regret. She then decides to go on a dangerous mission to retrieve something important to Naruto that was lost during the incident as a way to earn his forgiveness.
Hinata might develop greater courage as a result. Since she regrets making Naruto cry, she wants to prove herself worthy of his friendship again. This could lead her to take on challenges she previously would have shied away from. For instance, she could volunteer to lead a difficult mission or stand up to a bully in the village, all while thinking about how she can better herself and regain Naruto's trust.
One possible plot could be that Naruto sacrifices himself to save the village from a powerful enemy. Hinata, who loves Naruto deeply, is devastated. She might cry as she remembers all their moments together, from when they were kids to their more recent interactions. In the fanfiction, she could then take on Naruto's will and strive to protect the village in his honor.
One possible plot could be that Naruto sacrifices himself in a great battle against an ultimate enemy. Hinata, who has deep love for Naruto, is devastated. She might cry inconsolably as she remembers all their moments together, from when she first noticed him as a child to their more recent interactions. She could also vow to carry on Naruto's legacy in the village, while mourning his loss privately.
One possible reason could be her deep love for Naruto. Despite her actions, she realizes that Naruto is the one she truly wants. Cheating goes against her values and her feelings for him, so she regrets it as she understands the harm it has caused to their relationship.
It could be due to miscommunication. Suppose there was a misunderstanding between her and Naruto. For example, Naruto might have said something that Hinata misinterpreted as him losing interest in their relationship. This confusion could have led her to seek comfort in another person, which unfortunately led to cheating.
Well, perhaps in the fanfiction, Naruto and Hinata find out they're having a baby unexpectedly. They then have to deal with the initial shock and excitement. Naruto could be super protective of Hinata right away, making sure she has everything she needs. Hinata might start thinking about how to decorate the nursery in a way that combines their two cultures, Uzumaki and Hyuga. And as the pregnancy progresses, they could share their fears and joys with their friends in the village.
One possible reason could be that she realizes she truly loves Naruto too much to be apart from him. Maybe she left because of some misunderstanding or external pressure, but then comes to understand that her place is by his side. Another reason might be that she sees how much Naruto has grown and changed, and regrets not being there to support him during that journey. Also, she could have found that life without Naruto is just not as fulfilling as she thought it would be.
Hinata might be very cautious at first. She has been deeply hurt by Naruto's cheating, so even though he regrets it, she would need time to heal. She may not immediately forgive him and might keep her distance to protect herself.
Well, it can add a lot of drama to the plot. For starters, it could lead to a reconciliation arc between Hinata and Naruto. Their relationship would be in a state of flux, with Naruto perhaps being initially hesitant to forgive or trust her again. This would create tension and anticipation for the readers. Also, Hinata's regret might make her more determined to make amends, which could lead to her taking bold actions to get back into Naruto's good graces and the story's main events.
A simple plot could be that Hinata gets injured while on a mission, and Naruto takes it upon himself to nurse her back to health. During this time, they have long conversations and get to know each other on a deeper level, leading to the start of their romantic relationship.