Another plot could involve Sakura being forced to betray Naruto. Let's say an enemy captures someone she loves dearly, like her parents or Sasuke, and forces her to give information about Naruto in exchange for their safety. This would create a very complex and tragic situation for her.
At first, Naruto would likely be extremely shocked. He has always considered Sakura a friend and teammate, so this would be a huge blow. He might question his own judgment in trusting her.
Well, it could be that Rias betrays Naruto for power. Maybe she makes a deal with a powerful enemy of Naruto in order to gain more influence in the ninja world or some other realm. Another possibility is that she betrays him out of jealousy if Naruto has something she desires deeply, like a special technique or a strong bond with someone she wants to break.
One possible plot is that Naruto and Sakura get sent on a long - term mission together, away from the village. During this time, they rely on each other completely and this deepens their bond. They start to share their dreams and fears, and that's when their love begins to bloom.
One plot could be that Naruto and Sakura are seeking shelter in the cave from a powerful enemy. Inside, they find a hidden scroll that contains a powerful jutsu that was lost long ago. They then have to decide whether to keep it safe or use it to defeat their enemy.
Well, in this kind of fanfiction, it might be that Sakura loses Naruto because of a misunderstanding. Maybe some false rumors spread about her, and Naruto distances himself from her. Then Sakura has to find a way to clear her name and win back Naruto's trust. Or perhaps Naruto is influenced by some dark force that makes him turn away from Sakura, and she has to fight against this force to get him back.
Well, in a 'mikan sakura betrayed fanfic', she could be betrayed by her family. Say her sister steals an important opportunity from her, like a chance to study abroad or participate in a big competition. It would be a huge betrayal as family is supposed to support each other. Also, in a magical or fantasy version, Mikan could be betrayed by her mentor in the art of magic. The mentor might use Mikan's trust to steal a powerful magical artifact that Mikan was supposed to protect.
One possible plot could be Sasuke getting involved with another character due to a misunderstanding or a sense of being drawn to someone who seems to understand a different side of him that he feels Sakura doesn't. For example, if there's a new female character who shares his dark past experiences more directly.
Another plot could be that there is a traitor in the ANBU, and Kakashi and Sakura are tasked with finding out who it is. They have to investigate their fellow ANBU members, which is difficult because they are all supposed to be highly trustworthy. During this process, they might discover some secrets about the ANBU that they didn't know before, and their relationship might change as they uncover more and more about the mystery.
One possible plot could be Sakura using the kubikiribocho to defend her village or friends. She might face powerful enemies and have to master the weapon quickly.
One possible plot could be that Sakura and Ino are long - time rivals, but a sudden danger forces them to work closely together. As they do, they start to see each other in a new light, and the kiss could be a culmination of that new - found understanding and attraction.