Well, it could start with Sakura coming up with a clever plan to tease Sasuke. Maybe she uses her medical ninjutsu skills in an unexpected way to get his attention. For example, she might pretend to be examining him more thoroughly than necessary.
In a 'sakura teasing sasuke oneshot fanfic', a possible plot element could be Sakura using her knowledge of Sasuke's likes and dislikes. If she knows he has a soft spot for a certain type of food, she could use that to her advantage. She could make the food and then tease him about how he has to do something for her in order to get it. This creates a fun dynamic between them.
I'm not sure about a specific 'sakura teasing sasuke oneshot fanfic' off - hand. You could try searching on fanfiction - dedicated websites like Archive of Our Own or FanFiction.net. There are often a large number of Naruto - related fanfics there.
Sasuke could initially be a vampire who is full of anger and resentment, maybe because of how he was turned. But Sakura's positive attitude and kindness could start to soften him. He might start to open up about his past and his feelings. Sakura could develop from a somewhat naive vampire into a more worldly and wise one. She would learn about the darker side of the vampire world through Sasuke, and this would change her. Maybe she would become more cynical at first, but then find a balance between her old self and the new knowledge she has gained.
For Sakura, she could grow in terms of her leadership skills. If they encounter any difficulties in the forest like being chased by a group of wild animals or getting caught in a dangerous situation, she could step up and lead the way out. Sasuke might then realize that Sakura has the potential to be a great leader. And for Sasuke himself, he could become more open to the idea of a relationship with Sakura. The seclusion of the forest could provide the perfect backdrop for him to explore his feelings for her.
Maybe Sasuke says something really offensive about their past or her skills, and Sakura just snaps and starts beating him up.
One possible plot could be that Sasuke decides to leave the village again for some reason, and Sakura tries to stop him. This leads to a heated argument where they discuss their past, their relationship, and Sasuke's goals. Sakura might be trying to convince Sasuke to stay for the sake of their friendship or something more, while Sasuke is firm in his decision.
One possible plotline could be that after Sasuke has finally returned to the village and reconciled with Sakura, they start to rebuild their relationship. They go on dates, share their feelings and experiences during their time apart, and gradually their love deepens until they reach a point of expressing their physical love for each other.
A possible plot development is that Sasuke challenges the man Sakura is arranged to marry to a duel. If he wins, he demands that the arranged marriage be called off. Another is that Sakura, seeing Sasuke's jealousy, starts to have second thoughts about the arranged marriage herself.
One popular 'sakura teasing sasuke fanfic' could be 'A Blossoming Rivalry'. In it, Sakura playfully teases Sasuke in various ways during their training sessions. It shows a different side of their relationship, adding a touch of humor and a new dynamic to the story.
One possible reason could be that Sakura has finally grown tired of Sasuke's aloof and cold behavior towards her. She might have realized that she has been constantly chasing after him while getting little in return, so she decides to ignore him as a form of self - preservation.
It could be because of a dark power corrupting Sasuke. Maybe an ancient evil force takes over him and makes him see Sakura as an enemy. In some fanfics, this kind of external influence can completely change a character's actions. Also, it might be related to Sasuke's pursuit of power. If he believes Sakura is standing in the way of his ultimate power - seeking goal, he could be driven to kill her.