Since I don't know the details of the 'lethe game story', I can't say for sure who the main characters are.
Well, the 'lethe game story' could potentially revolve around a game's narrative that has elements inspired by the idea of Lethe. It could be a story where the main character enters a virtual realm where past actions or knowledge are wiped clean, like starting anew. There might be challenges based on this lack of memory or knowledge, and the story could be about how the character overcomes these obstacles and discovers the truth about the game world and themselves.
Since it's a Harry Potter fanfiction, we can expect some of the main characters from the original series. Harry Potter himself is probably in it. He might be joined by his friends like Hermione and Ron. There could also be other characters like Dumbledore or Snape if the story is set in Hogwarts or related to the wizarding world's politics. But again, without actually reading the 'lethe harry potter fanfiction', it's all speculation.
Typically in 'the dark game story', there could be a hero figure who is trying to expose the truth behind the dark game. There might also be antagonists, perhaps shadowy figures who are running the game or trying to keep the secrets buried. There could also be supporting characters like friends or colleagues of the main character who help in the investigation or are unknowingly caught up in the events of the dark game.
The main characters are Sora and Shiro. They are siblings who are like a gaming duo. Sora is the older brother, and he is very intelligent and good at strategizing in games.
In the 'gerald game story', the primary characters are a married couple. There's the wife, who is unnamed, and her husband, Gerald. Gerald is important at the start as his actions lead to the wife's predicament. But it's the wife who really takes center stage. She has to deal with being immobilized, her psychological state, and trying to escape, so she is the main character in terms of the story's development.
Perhaps there are a group of siblings who are the prey. They rely on each other for protection and support throughout the story. One might be the brave leader, another the smart planner, and so on.
The main characters in the 'kabaneri game story' may include those who have special skills or knowledge relevant to the situation. There could be a scientist - type character who is trying to understand the nature of the Kabane and find a way to defeat them. Also, a female Kabaneri who is both beautiful and powerful could be one of the main characters, leading the charge against the Kabane and inspiring others to fight.
Perhaps there are multiple main characters. There could be a group of friends in a survival game, and one of them secretly becomes a stalker. So the friends are the main characters, and the one who turns into a stalker is also a crucial part of the story as they drive the conflict.
I don't know for sure who the main characters are in the Lumen Game Story as not much information is given. But they could be brave heroes with the ability to manipulate lumen.