One of the main themes could be redemption. Since the demon lord is reborn as a nobody, he might have a chance to atone for his past deeds. Another theme could be self - discovery as he has to figure out who he is in this new, ordinary form. And also, there might be a theme of adapting to a new life, which is very different from his previous life as a powerful demon lord.
The main themes may include power and powerlessness. As a demon lord, he was all - powerful, but now as a typical nobody, he experiences what it's like to be weak. Additionally, there could be a theme of identity crisis. He has to reconcile his former identity as a demon lord with his new, unremarkable self.
Perhaps the people who interact with the reborn demon lord are interesting too. They might be ordinary folks who are unaware of his past. Their reactions to him and how they influence his new life could be very engaging. For example, a kind - hearted neighbor who befriends him without knowing his true origin.
The main themes in 'The Greatest Demon Lord Is Reborn' light novel include transformation. The character goes from being a feared demon lord to someone with a new chance at life. There's also the theme of self - discovery. He has to explore his new abilities and limitations in this reborn state. Additionally, the theme of morality comes into play as he decides whether to follow his old, perhaps more evil ways or embrace a new, more positive path.
In the 'Demon Lord Reincarnated as a Nobody' light novel, the primary character is the demon lord who has taken on a new, ordinary identity. Alongside him, there could be a young adventurer who befriends him, not realizing his true nature. There might also be an old wizard in the village who senses something different about him. And don't forget about the local tavern owner who serves him and becomes a part of his new life story, each character adding depth and complexity to the overall narrative.
One key plot point is the adjustment of the demon lord to his new 'nobody' status. He has to deal with being in a much weaker form and having no recognition. Another is his encounters with various characters who treat him as an ordinary person, which is a big change from his previous all - powerful state.
One of the main themes is power and its consequences. The protagonist has great power and has to deal with how it affects those around him and the world he's in.
One main theme could be redemption. Since the demon king is reborn, he might be seeking to atone for his past sins or mistakes. Another theme could be power struggle. Even as a reborn entity, he may still have to fight for his place in the new world.
Another theme might be friendship or the potential for it. Despite their opposing roles, there could be moments where the demon lord and the hero understand each other on a deeper level, blurring the lines between their two worlds.
One of the main themes is redemption. The demon lord is given a chance to retry, which implies a journey towards redemption. Another theme is power and its proper use. As he navigates his new situation, he has to decide how to use his power differently from before.
Survival in a hostile world. Whether it's the demon lord against other powerful entities in the magical world or adapting to a modern world like in 'The Devil is a Part - Timer!', the theme of survival is quite common. The demon lord has to use their wits and powers to stay alive and relevant.
As I'm not familiar with this specific light novel, it's hard to say who the main characters are. But it's likely that there is a demon lord character at the center of the story. There may also be characters who oppose the demon lord, like a group of brave warriors or mages. Maybe there's a special character who has a connection to the demon lord from the past or something like that.