In a 'sakura gets poisoned' fanfiction, she might first start to feel unwell, like having dizziness and weakness. Her friends could then notice the strange symptoms and start to search for a cure.
Perhaps an enemy from a rival group. They might see Sakura as a threat to their plans, so they poison her to get her out of the way. Another possibility is a character who has been secretly harboring a grudge against her for a long time, and finally decides to take action by poisoning her.
Well, he might start to lose his powers. The poison could be something that messes with his enhanced physiology that gives him his Spidey - abilities.
If Sakura gets kidnapped by the Akatsuki in fanfiction, Sasuke could also get involved. Since he has his own history with the Akatsuki, he might use his knowledge to track them down. Also, Sakura herself could be trying to find a way to escape from within. She's a strong kunoichi, after all. She might be gathering information about the Akatsuki's plans while being held captive.
In this fanfiction, Sakura might face new challenges within the new team. For example, she could struggle to adapt to the new team dynamics, like different leadership styles or teammate personalities.
In this fanfiction, perhaps Sakura will have new learning experiences. The new teachers might introduce different teaching methods that challenge her to grow. For example, they could focus more on practical applications of the knowledge she has been learning, which would make her studies more interesting and engaging.
If Harry Potter gets poisoned in fanfiction, it could lead to some really interesting plot twists. His magical powers might be affected. He could start having strange visions or lose some of his abilities temporarily. Dumbledore or other teachers might get involved in a big way to figure out who poisoned him. And the whole Hogwarts community could be in an uproar, with students trying to find out the truth and protect Harry from any further harm.
Well, Sonic might start to lose his speed gradually as the poison takes effect. His friends would surely rally around him, with Tails using his intelligence to try and find an antidote. Maybe they'd have to race against time to find a special ingredient in a far - off land that could save Sonic.
She might gain new and unpredictable powers. The curse mark could potentially enhance her strength in combat, like giving her more chakra or new jutsu abilities. However, it could also come with a price, such as being influenced by dark forces.
Perhaps in the fanfiction, Sakura gets the Sharingan as a gift from a mysterious figure. This figure might be an ancient ninja spirit or something. With the Sharingan, Sakura's combat abilities would skyrocket. She could start seeing the chakra flow of her opponents more clearly, allowing her to predict their moves better. Also, she could use the Sharingan's genjutsu - related powers to her advantage in battles.
In some fanfictions, Dumbledore is portrayed as having a lot of secrets. If he gets caught, it could be related to his past. Maybe some old enemies find out where he is and catch him. Then he would have to deal with his past coming back to haunt him. His friends might try to rescue him, but it would be a very difficult situation for him, and it could change the whole dynamic of the fanfiction story.