He could go to all sorts of magical places. Maybe he ends up in a hidden magical kingdom or a mysterious enchanted forest.
It really depends on the author's imagination. Harry could find himself in a magical city that only appears once in a century or a hidden cave filled with powerful magic.
Well, Harry might go to a forgotten magical school with ancient secrets or a magical realm beyond our imagination. The possibilities are endless in fanfiction!
They might go on a journey to discover the secrets of Itachi's past. Naruto could learn a lot from Itachi about the Uchiha clan and their powers. Maybe they'll encounter other powerful ninja clans along the way and have to fight or make alliances.
Harry could also feel a sense of betrayal, especially if he thought Snape was on his side to some extent before. This feeling of betrayal might fuel his determination to resist. He might call out for help from his friends or any allies he has in the wizarding world. And depending on how long he is held by Snape, his reaction could evolve from pure anger and resistance to a more strategic approach of trying to understand Snape's endgame.
It's also likely that they go to Romania. Given Sirius' knowledge of the wizarding world, he might know of a safe haven there. In Romania, they could be around dragons and learn about dragon - related magic. Harry would surely be fascinated by the dragons and it could be a place where he can grow stronger in a different kind of magical environment.
Harry could also be very hurt. He might start to question what he did wrong and try to talk to Ginny to find out the reason. He might say things like 'Ginny, I don't understand. What have I done?' in an attempt to clear up the situation.
It could lead to a big change. Maybe Harry and Dudley would learn more about Severus and develop a different relationship with him.
Harry might struggle and try to break free. He is a brave character and doesn't like being restrained, so he would likely use his physical strength and magic skills, if possible, to get out of Snape's hold.
Harry could be heartbroken. He might isolate himself for a while, not wanting to see anyone or do anything. Just staying in his room, crying and reminiscing about the good times with Edward.
In some fanfictions, Harry might become very angry. He might feel that Ginny is being unfair or not understanding his situation. This anger could lead him to say things he doesn't really mean in the heat of the moment. However, deep down, he's really hurt and confused.
Harry could be initially confused. He might not understand why Hermione, who has always been there for him, is suddenly pushing him away. So he might try to talk to her to find out the reason.
In a 'James takes Harry' fanfic, the relationship between the two would be central. We could see James teaching Harry advanced magic that he didn't get to learn in the books. For example, James was known for being a talented wizard in his own right. He could introduce Harry to spells and magical concepts that are more advanced or even lost in the wizarding world. It would also be interesting to see how they interact with other characters. Would James be friends with the Weasleys? How would he handle Snape? There are so many possibilities to explore.