At first, their relationship would be very tense. Sasori is a former Akatsuki member and has done many cruel things, while Sakura is a Konoha ninja. But as they travel through time together, they would start to rely on each other. Sakura might see a different side of Sasori, perhaps a more vulnerable side that was hidden by his cold exterior. Sasori, in turn, would come to respect Sakura's strength and determination.
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.
Well, in fanfiction, Sasori and Sakura can be put into various scenarios. Since Sasori was once an antagonist, it's interesting to think about how Sakura, who represents the side of good, would interact with him. If they are forced together, it could be like a clash of two different worlds. Sasori is so used to his own way of doing things with his puppets, and Sakura is used to her ninja training and teamwork with her comrades.
Sasori and Sakura are from different fictional universes in Naruto. A fanfiction about them could explore an alternate reality where their paths cross in unexpected ways. For example, they might be forced to work together on a mission. This could lead to a lot of character development as they have very different personalities. Sasori is cold and mechanical, while Sakura is warm - hearted and determined.
In lemon fanfiction involving Sakura and Sasori, it often explores a unique relationship dynamic. Usually, the writers might play with the contrast between Sakura's positive and kind nature and Sasori's more complex and often darker personality. This can lead to some interesting character interactions and development within the fictional scenarios.
In this fanfiction concept, the relationship between Sasori and Sakura would be turned upside down. Sasori, known for his cruelty, would now be in a position of a father. He might try to influence Sakura's growth in his own way. Maybe he'd teach her some of his puppet - making skills or his unique combat techniques. Sakura would be in a tough situation. She has her own values and goals, but now she has to factor in her connection to Sasori. She might be conflicted between her loyalty to her friends and her new - found family bond with Sasori.
Deidara could be an ally. Since they were partners in the Akatsuki, Deidara might follow Sasori through time, especially if he thought there were new art - worthy explosions to be made in different time periods. Also, Konan could be an ally. Her paper - based abilities and calm demeanor would be useful in different time - travel situations. She could help Sasori blend in or gather information.
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, it's possible to find such fanfiction. Fanfiction often explores different pairings and scenarios that might not be part of the original canon. For the 'sakura engaged to sasori' concept, the writer might play around with how they got engaged. Maybe it was a political alliance in a fan - created world, or perhaps there was some sort of magic or misunderstanding that led to the engagement. Reading through different fanfictions would give you a better idea of the various interpretations.
One possible fanfiction could be about Sasori and Sakura meeting in a secret forest. Sasori, with his puppet - like appearance, might initially startle Sakura. But as they interact, they discover they have more in common than they thought. For example, they both have a deep connection to their respective arts, Sasori with his puppetry and Sakura with her medical ninjutsu. This could lead to an unexpected friendship or even a deeper relationship as the story progresses.