Sometimes, even antagonists from Hermione's past in the UK might make an appearance in the story. Maybe a Death Eater who escaped justice and is now also hiding in Australia. This would create a tense situation where Hermione has to deal with this old threat while also trying to build a new life in a foreign magical land.
Draco Malfoy is often a common character. He has a big role as he is one of the prominent Slytherins. Their interactions can range from hostile to friendly depending on the story. For instance, he might initially be against Hermione being in Slytherin but later come to respect her.
Obviously, Harry would be the main character. But he could meet new friends like an Aboriginal wizard who teaches him about the ancient magic of the land. There might also be a young Australian witch who becomes his love interest and helps him adapt to the Australian wizarding world.
One possible plotline could be Hermione starting a new life in Australia, perhaps opening a magical library or study center. This would allow her to share her knowledge with the local wizarding community.
Iruka sensei is almost certain to be in it. He has always been important in Naruto's life. Also, Sakura might be there. She could be one of the first to welcome Naruto or perhaps she might initially be a bit cold because of her past feelings for Sasuke. Other characters like Kakashi sensei could also make an appearance, guiding Naruto in his new life in Konoha.
Obviously, Sheldon himself. His mother would probably be there too. She's always been a big part of his life in Texas. And maybe his brother Georgie would also show up. They could have some brotherly bonding moments.
Obviously, Hermione herself is the central character. Harry and Ron usually show up as her friends and supporters. Dumbledore might also make an appearance in some fanfictions, perhaps as a guiding spirit or a source of wisdom for Hermione. Neville could be there too, maybe as a Hogwarts teacher providing input on educational matters.
She might meet a young and talented French wizard who is a master at transfiguration. He could teach Hermione some advanced techniques and they could become good friends or even rivals in the field of magic.
In this fanfiction, Hermione would be greatly influenced. She would be eager to explore the Australian magical libraries and discover new spells and potions. Ron might gain a love for Australian food, which could change his physique a bit. The kids would be more open - minded, as they are exposed to a new and diverse magical culture. They might also become more independent, as the Australian wizarding community could have a different parenting style.
One possible plot could be that Harry, tired of his fame in his home country, decides to move to Australia for anonymity. He enrolls in an Australian wizarding school as a transfer student. There, he experiences a different style of magic education, participates in local wizarding sports, and falls in love with an Australian witch while trying to keep his true identity a secret.
There could be new characters introduced, like a nosy neighbor who notices Hermione's odd behavior. This neighbor might try to figure out what she's up to, leading to some comical or tense situations. Also, Hermione might interact with local Muggle kids, and through these interactions, she could learn more about Muggle culture and values.