Harry is the central figure, of course. However, some fanfictions might introduce new characters. For example, a young Muggle - born witch or wizard who Harry takes under his wing to teach about magic and healing. There could also be a former Death Eater who has reformed and now wants to learn the ways of healing from Harry to atone for their past sins.
Most likely, the main character is the healer. They could be an original character created for the fanfic. There might also be appearances from well - known Harry Potter characters like Harry himself, Hermione, and Ron. Maybe the healer has to work with them to solve some sort of magical health crisis in Hogwarts or the wizarding world at large.
Well, obviously the Black Healer is one of the main characters. They are the center of the story with their healing abilities.
Since I haven't read it, I'm not sure. But it could be the healer with the imprint as one of the main characters. There might also be a patient or someone the healer is supposed to protect because of the imprint.
Well, it's hard to say for sure without reading the fanfiction. But it could be a young protagonist, perhaps a teenager, who is dealing with the typical problems of growing up like bullying or family issues. The story could then revolve around how they use time to heal from these difficulties.
Hermione could be important. She might help Harry with his studies, providing him with books and research materials on healing magic. Also, Ron could be there, perhaps he gets injured a lot in his new job and Harry has to keep patching him up. And then there could be the head healer at St. Mungo's who acts as Harry's mentor, guiding him through the complex world of healing.
Luna Lovegood is sometimes written as a mind healer in fanfiction. Her unique perspective and kind heart make her a great candidate. She can use her understanding of thestrals and other magical creatures to bring comfort to those with troubled minds.
Neville Longbottom could also be considered a natural healer. He has a great affinity for Herbology. His skills in growing and understanding plants could easily translate into using them for healing. He could be the one to discover new uses for common and rare magical plants alike, perhaps creating poultices or potions from them to heal various ailments that the regular wizarding medical field hasn't fully explored yet.
Healer Pomfrey is significant in Harry Potter fanfiction as she represents the medical care within Hogwarts. In fanfics, she can be a stabilizer during chaotic times. For instance, when Harry and his friends are injured during their adventures against the Dark Arts, Pomfrey is there to patch them up. Her presence gives a sense of safety within the Hogwarts walls, even in the face of great danger.
Perhaps Harry has a vision or a prophetic dream where he sees himself as a healer, saving lives. This drives him to study hard in his Healing classes at Hogwarts. He also starts to research ancient healing techniques on his own. He faces some challenges, like some people doubting his ability because of his past as 'the boy who lived', but he overcomes them and works towards his goal.
Not having read the 'the healer novel', we can only speculate. The main character is likely the healer. There may be a love interest for the healer, which could add a romantic sub - plot. And there could be an authority figure in the story, like a king or a village elder, who either supports or opposes the healer's actions, creating conflict and driving the story forward.