In this fanfiction, it could be that Sasuke has lost his mind due to some traumatic event. He ties Sakura with snakes because he sees her as a symbol of the world he wants to reject. The snakes could represent the chaos and danger that he now associates with her. Meanwhile, Sakura might be in shock at first, but then she starts to analyze the situation. She realizes that Sasuke is not in his right mind and tries to use her medical knowledge and ninja skills to not only free herself but also to heal Sasuke's broken psyche.
One possible reason could be a misunderstanding. Maybe Sasuke has been misled to think Sakura is a threat to him or his goals at that moment. In the Naruto universe, Sasuke has often been on a solitary path filled with suspicion. He might tie her up to keep her from interfering with something he's about to do. Another aspect could be related to some kind of test. He may want to see how Sakura will react in such a difficult situation to gauge her growth as a ninja. It could also be a part of a plan to protect her from something more dangerous, by restraining her movement in a way that he believes is the best for her safety, using the snakes as a means to immobilize her as he is known for his snake - like jutsu.
Sakura could also be more composed in her reaction. Given her growth as a character, she might try to reason with Sasuke first. She could say things like 'Sasuke, I know you must have a reason for this. Let's talk about it.' However, if Sasuke doesn't respond or seems hostile, she may start to feel betrayed. She might then use her medical ninjutsu knowledge to try to find a weakness in the snakes or in Sasuke's technique that is keeping her tied up. She could also start thinking about how she can turn the situation around and make Sasuke see reason.
One possible plot could be that Sasuke, with his snake - related powers or abilities, restrains Sakura in a non - harmful way as part of a training exercise. He might be trying to teach her how to break free from unexpected restraints in battle situations. For example, he could use his snakes to hold her arms gently while she tries to use her medical ninjutsu skills and strength to escape.
It would severely strain their relationship. Sasuke's act of tying Sakura with snakes is a very aggressive and demeaning act. Sakura would likely feel betrayed and terrified. This could lead to her having a deep - seated hatred for Sasuke, or at least a great deal of wariness and distance. Their relationship, which was already complex, would become even more so, with Sakura possibly vowing to never trust Sasuke again.
Sakura might have a hidden jutsu or power that she has not yet fully explored. In this dire situation, she could tap into this unknown ability to break free from the snakes. For example, she could have some latent chakra - based power that she discovers can repel or dissolve the snakes binding her.
In fanfiction, Sasuke's shadow snakes wrapping Sakura could lead to a very tense situation. It might be a part of a battle scenario where Sasuke is initially hostile towards Sakura. Or perhaps it's a miscommunication, and the snakes are used to restrain her before Sasuke realizes his mistake. It could also be a dark - themed fanfiction where Sasuke has turned evil and the snakes are a symbol of his new, menacing power over Sakura.
In a fanfiction plot, the snakes coiling Sakura might be a sign of a prophecy. Sasuke, being the one associated with the snakes, has to help Sakura fulfill the prophecy. This journey involves them facing various challenges together, strengthening their bond. As they overcome each obstacle, their relationship evolves from just comrades to something more romantic.
One possibility is that the snakes are under a spell. They wrap around Sakura because she has a certain energy or power that attracts them. In the fanfiction, this could lead to Sakura having to figure out why the snakes are drawn to her and how to break the spell on them. It could involve her using her medical ninjutsu skills or her inner strength that she has developed over time.
It could be about Tobi having some serious motives for tying up Sakura. Maybe he's trying to extract information from her, thinking she has knowledge that is crucial for his plans.
The plot could involve a prophecy that ties the kabuto snakes' coils to the sakura. A chosen one is destined to bring together the power of the snakes' coiled forms and the essence of the sakura. Maybe the snakes' coils hold a map or a code that is inscribed on the petals of the sakura, and the protagonist has to decipher it to save their world from an impending doom.