Percy might feel both lonely and liberated. On one hand, he misses the company of his family and friends, which makes him lonely. On the other hand, being alone gives him a sense of freedom to explore Hogwarts and be his own person without the influence of others.
He probably feels a bit scared. Hogwarts is a big and strange place, and without his family, it can be intimidating.
In the 'Percy goes to Hogwarts alone fanfiction', it's possible that Percy will discover new aspects of himself. Since he's alone, he has to rely solely on his own wits and skills. He could stumble upon some hidden secrets of Hogwarts that others haven't found. Also, he may have some unique encounters with the Hogwarts professors who take notice of his solitary situation and offer him special guidance or tasks.
He might initially be met with suspicion. The Hogwarts faculty are protective of their school and students. However, Percy could win them over with his courage. For example, if there was a dangerous situation, he would jump in to help, just like he did in his demigod adventures. Professors like McGonagall might be impressed by his loyalty and sense of justice.
Percy would adapt to Hogwarts in a unique way. Since he has experience dealing with strange creatures and magic in his own world, he'd likely approach the Hogwarts magic with an open mind. He might have trouble with the more academic side at first, but his street -smarts and quick -thinking would allow him to figure out how to pass his classes. He'd also bond with some of the students over shared values like loyalty and bravery.
In this fanfiction scenario, Percy's adaptation to Hogwarts would be a complex process. He'd first have to deal with the cultural shock of a new magical world. The Hogwarts houses would be different from the cabins at Camp Half - Blood. He'd need to figure out which house he belongs in. His skills with a sword might not be as useful as in his own world, but he could learn to use magic to enhance his combat abilities. Also, he'd have to make new friends and enemies, and learn how to navigate the social politics of Hogwarts while still holding on to his own identity as a demigod.
Well, he might start by using his knowledge of Hogwarts' secrets and passageways. He could keep an eye on Harry during classes and in the common areas. Maybe he'd also form alliances with other students or teachers who he trusts to help in the protection effort.
In a fanfic where Percy goes to Hogwarts alone, he could form some interesting friendships. He might befriend Neville, who is also a bit of an underdog. Percy could teach Neville some of his own courage -building techniques. And he would surely be a star in the Quidditch field with his athletic abilities, even if he has to learn the rules first.
Percy would likely be drawn to the Forbidden Forest. His adventurous spirit would lead him there. He might encounter magical creatures that are completely new to him. He could try to communicate with them using his own experiences with mythical beasts from his world. And when it comes to classes, he'd have a hard time with some like Potions as it has no equivalent in his demigod training, but he'd probably excel in Defense Against the Dark Arts as he's used to fighting all kinds of dangerous foes.
There's a chance that Percy meets the personification of Tartarus itself. It could be a shadowy, all - powerful being that tries to break Percy's spirit. Percy, being the brave hero he is, would have to resist and find a way to either outwit or overpower this entity in order to continue his journey in Tartarus.
Some students might be in awe of him. His demigod status and the stories he could tell about fighting monsters would be really cool to them. Others might be a bit jealous, especially those who pride themselves on being pure - blood wizards and think their magic is superior. But then there would be those who would be friendly and curious, like the Weasley twins. They would probably want to team up with him to pull some epic pranks using his unique skills.
She might face a lot of challenges. For example, she'd have to adapt to the magical world of Hogwarts which is very different from her original world. The classes like Potions and Transfiguration would be new to her. And she might make new friends or enemies among the Hogwarts students.