I'm not entirely sure as it depends on the specific fanfiction. It could be a character who has been through a lot, like a war veteran who has finally come out of the mental and emotional darkness of war. Maybe it's a young person who has overcome an abusive situation at home.
The main characters could vary widely. It might be a group of friends who have all been in a dark place together, like being trapped in a post - apocalyptic world. They each have their own demons to face but together they support each other in coming out of the darkness. Or it could be a single hero - type character who has fallen from grace but is now on a path to redemption and coming out of the darkness of their past mistakes.
Typically, there would be a central character who is the focus of the 'coming out of the darkness' journey. This character could be an outcast in their society, like a person with special powers in a world that fears them. There might also be a mentor - like figure who helps the main character along the way, guiding them through the difficult process of emerging from the dark state they were in.
There's not enough information to determine the main characters precisely. However, it could be a side character from the original source material that the author of the fanfiction decides to focus on. This character might have been overlooked in the original but now has their own story of emerging from the darkness, perhaps a character who was bullied in a school - based story.
It's hard to say exactly without reading it, but often in such fanfictions, there are characters that are either from the original source material it's based on or new characters created specifically for the fanfiction. They could be heroes with special abilities trying to fight against an evil force.
Another possibility is Luna Lovegood. She has a unique perspective on the wizarding world. In the fanfiction, she could be the one to lead others out of the darkness. Maybe she discovers a hidden power within herself that can dispel a great darkness that has fallen over Hogwarts. Her quirky nature and deep understanding of the unseen could play a crucial role in the story.
It's possible that the main character is not even human. Maybe it's a spirit associated with the sakura tree itself. And then there could be other characters like a villain who tries to keep the world in darkness and those who oppose the villain, all intertwined in the story of 'sakura out of the darkness fanfiction'.
Well, without more context, it's hard to be specific. But generally in fanfiction, 'came out of darkness' could mean a character breaking free from an oppressive force, like a character in a fantasy story escaping from the control of an evil sorcerer. It can also be a psychological journey, such as a character dealing with trauma and finally emerging from the mental 'darkness'.
Perhaps there is a wise old character who serves as a guide in the face of the darkness. And there might be a villainous character who is somehow associated with the source of the darkness. It's common in stories for there to be a contrast between different types of characters in relation to a central concept like the darkness in this story.
I'm not sure specifically as I haven't read the 'out of darkness novel' in detail. But usually, in a novel with such a title, there could be a protagonist who is the one trying to get 'out of darkness'. This character might be a young person facing some sort of internal or external struggles.
Often, there will be some sort of antagonist or opposing force. It could be an internal force within the main character, like their own negative thoughts or habits. Or it could be an external factor, such as a difficult person in their life, a harsh social environment, or a challenging situation that they need to overcome in order to get 'out of the darkness'.
It could be a new dark wizard that we haven't seen in the original series. This wizard could be extremely powerful and manipulative, and his main goal is to corrupt Harry. He might be using Harry's fame and his insecurities to draw him into the darkness.
Since I don't know the details of this story, I can't say for sure who the main characters are. They could be ordinary people who found themselves in extraordinary circumstances and had to fight their way out of a difficult situation.