Maybe he calls for help using a spell that alerts his friends, like Hermione or Ron. They then come to his rescue and figure out a way to open the cupboard from the outside.
He might find a hidden passage or a weak spot in the cupboard by exploring it carefully. Since he has experience with difficult situations, he'll start looking for any signs of an exit or a way to break free.
He might use his magic skills. For instance, he could use a spell to break whatever force is keeping him in the middle position.
He could try using his powerful magic to create a portal back to his own world. Maybe a spell like 'Portus' could work if he can focus enough.
There's a chance that he'll meet some sort of magical creature that has made the cupboard its home. This could be a friendly creature that helps him get out or a more mischievous one that makes his situation even more difficult. He'll have to use his wits and magic skills to deal with it.
They could try to find the source of the 'stuck' situation. Maybe it's a magical artifact or a powerful jutsu that's causing it. Once they find it, they can figure out how to reverse it.
One way might be to seek help from a powerful being in the Supernatural world, like a witch or an archangel. If they can convince this being to help them, they might be able to return home. Another option is to reverse whatever event brought them into the fanfiction world in the first place.
Often in fanfiction, the boy in the cupboard may develop by facing challenges. He could be put in difficult situations, such as having to fight off dark wizards. In these battles, he not only learns combat skills but also discovers his inner strength. He might also learn from his mistakes, like if he makes a wrong decision in a magical duel, he'll strive to improve and become a more well - rounded character.
That's a rather odd and inappropriate topic. Fanfiction should maintain a certain level of propriety and not delve into such strange and uncomfortable subjects.
You could also try to find the 'author' within the fanfiction. If it's a self - aware fanfic, there might be a way to communicate with the person who's writing it. Appeal to them to let you out. Think of it like being in a dream and trying to wake yourself up by realizing it's a dream.
Well, if you're stuck in a 'Game of Thrones' fanfiction, one way could be to look for any plot holes or inconsistencies. Maybe use them as a way to break free from the narrative. For example, if there's a prophecy that doesn't quite make sense, question it until it disrupts the story's hold on you.
Harry might be initially shocked. He could feel a mix of sadness and a sense of responsibility. After all, Sirius was like a father figure to him.