Well, in a fanfic like this, the plot could revolve around Sasori's obsession leading to him creating puppets in Sakura's likeness. He might be so fixated on her that he tries to replicate her in his own art form. Or perhaps he tries to manipulate situations in the ninja world to get Sakura to come to him willingly. He could send out false threats or create chaos just to draw her attention. And as Sakura becomes aware of his obsession, she has to figure out how to deal with it, whether it's through fighting or trying to understand the root of his feelings.
One common theme is the idea of the forbidden or unexpected attraction. Sasori is a villainous character, and Sakura is a hero - like figure, so their relationship is against the normal moral boundaries in the Naruto universe. Another theme could be redemption. Maybe Sasori's obsession with Sakura leads him to question his own evil ways and seek some form of redemption. Also, there's the theme of power dynamics. Sasori is very powerful with his puppets, while Sakura has her own strength in combat and medical ninjutsu, and the fanfic could explore how their powers interact in the context of his obsession.
One possible plotline could be Kakashi trying to protect Sakura at all costs. He might follow her around secretly to keep her safe from any potential threats in the ninja world. Another could be that he becomes overly concerned with her training, pushing her to her limits in a way that no one else does, all because of his obsession.
Another plot could be that they are sent forward in time. In the future, the ninja world has become very different, maybe more technologically advanced or in a state of peace. Sasori, who is used to a world of conflict and his puppet - making, would be out of place. Sakura, being more adaptable, tries to help him adjust. They might also discover that their actions in the past had unforeseen consequences that led to this future state, and they have to decide whether to try and change it back or let it be.
Maybe Itachi, despite his stoic nature, starts to have an unexpected soft spot for Sakura. He could be secretly protecting her during her missions, which might lead to some tense and mysterious moments as Sakura tries to figure out who her mysterious protector is.
A plotline could revolve around Sakura trying to understand Tsunade's past more deeply. Tsunade might be reluctant at first, but as they work together more closely, she starts to open up. This could lead to Sakura learning important life lessons from Tsunade's experiences, like how to deal with loss and keep going. They could also get into a situation where they have to use their combined medical and combat skills to save a group of injured ninjas.
One possible motive could be Sasori's desire to create the perfect puppet. Sakura, being a strong kunoichi, might have physical and chakra attributes that Sasori finds appealing for his puppet - making. He may see her as a unique specimen to add to his collection of puppets.
Well, perhaps Itachi is under the influence of a genjutsu himself when he captures Sakura. He could be acting against his own will. Sakura, in this situation, might try to break the genjutsu on Itachi while also trying to free herself. And during this time, she could discover some secrets about Itachi's past or his true motives that were hidden before. This could lead to a complex relationship between them where Sakura has a new perspective on Itachi, not just as an enemy but as a victim too.
One possible plotline could be that Sakura, being emotionless, is on a solo mission. She approaches every obstacle with cold efficiency, not showing fear or hesitation. Her lack of emotion might make her more calculating in battle, relying solely on her skills and strategic thinking.
Perhaps it could be a story where Marrow is injured during a battle and Sakura, being a medical ninja, has to treat him. Kimimaro, who has his own reasons for being there, observes their interaction. This could lead to a series of events where they all get involved in a mystery that is related to some ancient power. Kimimaro might be initially seen as a threat by Marrow and Sakura, but as they dig deeper, they find out that he is also a victim of certain circumstances.
Maybe Sakura teaches Sasuke about emotional control. Sasuke has always been brooding and angry, and Sakura, with her more empathetic nature, could show him how to manage his emotions better. This could lead to Sasuke becoming a more well - rounded ninja and a better teammate.