There could be a corrupt Hogwarts teacher who has been secretly practicing dark magic. This teacher, perhaps a Potions or Defense Against the Dark Arts teacher, has been influenced by the allure of power. They see Harry as a threat to their new - found power and decide to torture him in the Great Hall to send a message to the other students that they are in charge now.
It could be due to extreme exhaustion. Harry has been through a lot in his adventures. He might have been overusing his magic, perhaps in some secret training or in trying to protect Hogwarts from an unseen threat, and his body just couldn't take it anymore, causing him to faint right there in the Great Hall.
One possible plot twist could be that while Harry is sleeping, he has a prophetic dream that reveals a hidden danger in Hogwarts. Maybe he sees a dark magic entity emerging from the Forbidden Forest and approaching the castle while he sleeps. This could then lead to a race against time for him and his friends to figure out how to stop it once he wakes up.
He could be crying out of frustration. In the fanfiction, he might be facing difficulties in his studies or in learning new spells that are crucial for his fight against the dark forces. In the Great Hall, where he is constantly surrounded by students who seem to be doing better or at least not struggling as much as he is, he might feel inadequate and start crying. Also, if there are new threats emerging in the wizarding world and he feels like he's not making enough progress in preparing for them, this could lead to a breakdown in the Great Hall.
Sure. There are fanfictions that revolve around the Great Hall's architecture and its historical significance in the wizarding world. Some stories might explore how students interact with the magical elements of the Great Hall, like the floating candles or the enchanted ceiling. These fanfictions add depth to the world of 'Harry Potter' without any inappropriate content.
Neville Longbottom has the potential to be a great CEO as well. He has shown great courage and leadership skills in the original series. In a fanfiction context, he could lead a business related to herbology, perhaps creating a large - scale operation that supplies rare and useful plants to the entire magical world. His kindness and ability to inspire loyalty in others would also be valuable assets in running a successful business.
Hermione could be a great wingman. She's intelligent and resourceful. She could use her vast knowledge of magic and Hogwarts to create the perfect opportunities for Harry to be with his crush. For example, she could make sure they are paired up for a difficult project in class, which would force them to spend time together and get to know each other better.
It could be Voldemort. He might use hypnosis as a new way to get to Harry, trying to make him a weapon against the Order of the Phoenix. Another possibility is a new dark wizard who wants to make a name for himself by controlling Harry Potter.
One popular theme is the Sorting Ceremony. Fanfictions often explore the emotions and experiences of new students during the Sorting in the Great Hall. Another theme is the feasts. Writers might describe in detail the delicious magical food served in the Great Hall during these feasts and the interactions between characters.
An old ex - Auror who now lives near Hogwarts. He could have a past connection to Voldemort and some knowledge about the Dark Arts used in the Triwizard Tournament. He becomes an unofficial mentor to Harry, teaching him some unique spells and strategies that are not part of the regular Hogwarts curriculum. This character could bring a new perspective and a bit of wisdom to the story.
It could be a mischievous student who accidentally casts a wrong spell. Maybe a first - year who is still learning how to control their magic and ends up turning Harry into a cat.