His friends could be his main source of support. Hermione would probably be researching like crazy, trying to find any magical or Muggle solutions. Ron would be there by his side, cracking jokes to keep Harry's spirits up, even if the situation is tough.
The friends might take on more responsibilities in the fight against the Dark Arts while Harry is ill. They could be inspired by Harry's courage in the face of cancer to be even braver in their battles. At the same time, they would be constantly checking on Harry, making sure he has everything he needs, and be a shoulder to cry on when he's feeling down.
They could also organize fundraisers or awareness campaigns within the wizarding world. After all, cancer is not something they are familiar with. Harry's friends might also try to bring in experts from the Muggle world, like doctors or researchers, which could lead to some interesting interactions between the two worlds.
It could be a villain. Maybe it's been corrupted by dark magic and is out to attack students at Hogwarts.
It could be that he is wrongly perceived as dangerous. After all, he has survived the Killing Curse as a baby and Voldemort is always after him. People might be afraid to get close to him for fear of getting caught up in the dark wizard's wrath.
One reason could be to create a unique and unexpected story. By introducing a non - magical, real - world illness like lung cancer into the magical world of Harry Potter, the author can explore how the characters would react. Another reason might be to show the contrast between the muggle world, where such diseases are common, and the wizarding world, which has magic to deal with most problems. Maybe the author has some personal experience related to lung cancer and wants to incorporate it into a story they love.
In the fanfiction, Naruto's immortality could make him a key figure in resolving long - standing conflicts. He has the time and the power to study both the wizarding and ninja worlds deeply. So he could use his knowledge to find solutions to problems that have been plaguing the wizarding world for ages, like the fight between pure - bloods and half - bloods or the threat of dark wizards. His presence would bring a new dynamic to the story as he doesn't have the same limitations as the regular Harry Potter characters in terms of lifespan and the type of power he wields.
She could play the role of a new friend. For example, she might be a transfer student from a different wizarding school who befriends Harry and helps him in his fight against the dark forces. Maybe she has some unique magical abilities that give an edge in battles.
He could be a mentor. Since he's immortal, he has a vast amount of knowledge and experience. He could teach young heroes or anti - heroes about the value of life and how to use their powers responsibly. For example, he could guide Robin on how to be more strategic in combat, sharing his own experiences from fighting Voldemort.
They could be a tool for a hero in the fanfiction. A wizard inventor might use nanites to create a new type of magical device. These nanites could be programmed to perform specific tasks like detecting dark magic in the air or helping to heal magical creatures. This would give the hero an edge in their adventures against the forces of evil in the wizarding world.
Well, usually in such fanfictions, Harry might face a lot of emotional turmoil and have to find his way alone to overcome the betrayal and the challenges that come with it.
In the fanfiction, Shacklebolt could be a key figure in a plot related to Harry losing his glasses. He might be involved in a mystery where the loss of the glasses is more than just a simple accident. He could be investigating whether it was a malicious act by some dark forces, and his role could be to protect Harry and find out the truth behind it. He may also be in a position to teach Harry how to adapt to this new situation without his glasses, using his vast knowledge of magic.
She could play a protective role towards Harry. Since she's older, she might feel a strong sense of responsibility for her younger brother. For instance, she could be the one who first discovers some of the secrets about Voldemort's return and warns Harry.