Sasuke could also be the one to rescue Sakura. He has a deep bond with her, especially as they have been through so much together. His sharingan and combat skills would give him an edge in a fight against Black Zetsu.
It could be that in this fanfiction, Black Zetsu ties up Sakura as a way to stop her from interfering with his greater plans. Since Sakura is a strong and capable ninja, immobilizing her in this way gives Black Zetsu an advantage. He might be trying to use her as a bait to lure in other characters, like Naruto or Sasuke, into a trap.
Naruto could be the one to save her. He has a strong bond with Sakura and would never let her be in danger for long. His powerful ninja skills and his unwavering determination would make him a likely candidate to rescue her from Black Zetsu's grip.
Sasuke might also be involved in the rescue. Despite their complicated relationship, he still has some feelings for Sakura. And he wouldn't want to see her in the hands of someone like Deidara. Also, Kakashi, as their former sensei, would likely lead a rescue mission. He has the skills and experience to deal with Deidara's explosive attacks and find a way to save Sakura.
Maybe an unexpected character like a wise centaur from the forest near the camp. They are known for their wisdom and strength in the Percy Jackson universe, and might step in to help Annabeth when they see her in trouble.
The main characters are clearly Tobi and Sakura. Tobi is the one doing the tying up, which implies he has some sort of agency in the story. Sakura, on the other hand, is the victim of this action, and she will likely be the one trying to either resist or escape from this situation.
Naruto would surely be one of the first to try and rescue Sakura. He has always been protective of her and would not stand by while she's in danger.
Kakashi could be another character to rescue Sakura. He is a very experienced ninja and has mentored Sakura in the past. He might use his Sharingan or some of his unique jutsu to outwit the clone Itachi and free Sakura. And he's always looking out for his students, so it would be in character for him to step in and help.
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.
Well, in 'itachi ties up sakura fanfiction', a recurring theme might be the exploration of the characters' hidden sides. Since this is a non - canon scenario, writers can delve into aspects of Itachi and Sakura that were not fully explored in the original series. For example, Itachi's more controlling or possessive side, and Sakura's resilience in a difficult situation. There could also be themes related to trust and betrayal, as Sakura may initially feel betrayed by Itachi's actions but then things could develop in unexpected ways.
Well, perhaps it could be about Sakura being physically restrained by Black Zetsu. She might be struggling to break free in order to save her friends or stop some evil plan that Black Zetsu is part of.