One possible plotline could be that Naruto accidentally uses his fingers in a special jutsu near Sakura and it has an unexpected effect on her chakra. Maybe it disrupts her normal chakra flow momentarily, leading to a situation where Naruto has to help her regain control. This could be a way to deepen their friendship or understanding of each other's powers in the fanfic.
Another plotline might be that in a non - combat situation, Naruto is showing Sakura a new hand - sign technique using his fingers. Sakura, being the intelligent one, starts to analyze it and they end up collaborating to modify the technique. This could show their growth as shinobi and how they can work together creatively.
Perhaps in a more emotional fanfic, Naruto gently touches Sakura's forehead with his fingers, similar to how he did with Sasuke. But this time, it's to convey his feelings of friendship and loyalty to Sakura. It could be a turning point in their relationship where Sakura realizes Naruto's true depth of emotion towards her.
One possible plotline could be that Naruto finally returns after a long and dangerous mission. Sakura, who has been worried sick, is so overjoyed to see him alive that she impulsively kisses him. Another could be in an alternate universe where Naruto and Sakura are forced to pretend to be a couple for a mission, and during the course of it, real feelings develop and they end up kissing.
One possible plotline could be Sakura having to overcome her blindness while still training as a ninja. Maybe she develops new skills that rely more on her other senses. For example, her sense of smell or hearing could be heightened to detect enemies or find her way around.
In the fanfic, it might be set in an alternate universe where Sakura has a different personality. She could be more aggressive and competitive with Naruto. During a sparring match, she goes too far and seriously hurts Naruto. This could then be the starting point of a story about Naruto having to forgive her and them rebuilding their friendship.
Maybe Naruto travels the world to learn new ninja techniques. Along the way, he meets new people and forms new bonds, leaving his feelings for Sakura behind. Another plotline could be that he devotes himself to rebuilding the Hidden Leaf Village and his love life takes a backseat.
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 plotline could be her life before having Sakura. Maybe she was a kunoichi herself and had her own adventures in the Hidden Leaf Village.
One possible plotline could be that Naruto punches Sakura out of anger during an argument over Sasuke. Maybe Sakura is being too pushy about bringing Sasuke back in a way that Naruto doesn't agree with, and in a moment of frustration, Naruto lashes out. Another could be that Naruto is under some sort of mind - control and doesn't recognize Sakura, leading to him punching her. It could also be a sparring session gone wrong where Naruto misjudges his strength and accidentally punches Sakura hard.
Another plot could involve jealousy. If Sakura becomes jealous of Naruto's growing popularity and power among the villagers, she might betray him. She could spread false rumors about him, which would lead to the villagers turning against Naruto.
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.