He could encounter new magical elements or rules specific to that au fanfiction world. It's possible that the magic he knew before doesn't work the same way, and he has to adapt quickly. He might also face challenges that are unique to this new world, like different types of dark forces or political situations within the wizarding community there.
There's also a chance that Harry's own identity and purpose become muddled. In this new au world, his role as 'the chosen one' might not exist in the same way or at all. He could struggle with finding his place and figuring out what he's supposed to do. He may even start to question his own values and beliefs as he's exposed to different ways of life in this fan - created alternate universe.
Well, he might find himself in a completely different world with alternate versions of the characters he knows. For example, the relationships between characters could be reversed or changed in unexpected ways. Maybe he'll see a version of his best friend as an enemy or a character who was once minor become a central figure.
He might feel a sense of excitement at first. After all, it's a new and unknown adventure. He's leaving the familiar behind and entering a world that could be full of surprises.
Well, in this fanfiction, they could be on a quest for a special artifact in Au. Along the way, they would have to overcome various obstacles like dangerous terrains and traps. They might also meet some friendly locals who could help them in their journey.
It depends on the type of fanfiction. If it's an action - oriented one, the reader could be in the middle of a battle between different AU Sanses and Gaster. They might have to choose sides or try to stop the fighting. In a more comical fanfiction, there could be a lot of humorous situations, like the Sanses making jokes at each other's expense while Gaster just shakes his head in the background.
Well, the reader might experience a whole new world of adventure. The Sanses from different AUs could have unique personalities and abilities. For example, an Underfell Sans might be more aggressive compared to a classic Sans. And the Gasters could bring in some mystery and scientific elements. The reader could get involved in their stories, help them solve problems or just be a witness to their daily 'lives' in the fanfiction world.
One possibility is that Naruto enters an AU where chakra doesn't exist. Instead, there are other forms of power. He would have to learn how to use this new power from scratch. Also, the relationships between different ninja clans could be very different. Naruto might end up making new alliances and enemies based on this new dynamic. This could be a great opportunity for character development as he faces challenges that are completely different from what he's used to in his original world.
Well, in fanfiction, Harry Potter visiting a travel shop could lead to all sorts of adventures. He could meet some interesting characters there, like a seer who gives him a cryptic message about his next journey. The travel shop could be filled with enchanted maps and magical travel devices. He could be tempted by a special broomstick that can fly long distances without getting tired, which would be very useful for his travels.
Well, in many Harry Potter AU fanfictions, travel to an alternate universe can happen due to a disruption in time. If a time - turner is misused or there's a major magical event that messes with the time - space continuum, it can lead to an AU. Also, some fanfictions depict that a character's strong emotions and desires can trigger a journey to an AU. Say a character has a deep longing to see how things could have been different, and their magic responds by sending them to an AU. It's all very creative and varies from one fanfiction to another.
Well, they might see different versions of characters from Undertale. For example, the RWBY characters could be really surprised by the unique battle mechanics in Undertale's AU multiverse. Maybe Ruby would be especially interested in the different types of weapons or magic used in that world.
When Harry is summoned by Naruto fanfiction, it's likely that he would be a fish out of water. He would encounter characters like Naruto, Sasuke, and Sakura. His magic skills could be seen as a new form of power in that world. He might get involved in the battles between the ninja villages, using his own unique abilities to help or cause chaos, depending on how the story is written.
In some fanfictions, Harry might initially be angry and feel betrayed when he confronts the Order. He could question their decisions and secrecy. For example, he might be frustrated about not being fully informed regarding the plans against Voldemort.