Perhaps a sidekick or an accomplice of the villain protagonist could be interesting. They might have their own reasons for following the villain, and their relationship could be full of twists and turns. It could be a case where they are more than just a follower, but also have some influence over the villain's actions.
The protagonist is likely to be one of the most interesting characters. Since they choose to live as a villain, their motives and actions are bound to be unique. They might have a complex backstory that led them to this decision.
The side characters can also be really interesting. For example, the villainess's maids or servants. Their loyalty or lack thereof to the villainess can create interesting sub - plots. Also, any rival characters, like other noble ladies who might be competing with the villainess in terms of status or the affections of a certain character, are likely to be engaging.
Definitely the protagonist. She's in a tough situation, being a villainess, but she tries to make the best of it. Her character development is fascinating. Then there are the characters who oppose her. They add conflict to the story and their reasons for being against her can be quite intriguing. And the friends or allies she might make along the way are also interesting, as they support her in unexpected ways.
One of the main themes could be the concept of being a villain. It might explore how the protagonist embraces this role differently from the typical heroic narrative. Another theme could be self - discovery. As the character lives as a villain, they may learn more about themselves and their capabilities.
Power struggle is likely a theme. As a villain, the character probably has to deal with other powerful entities, whether they are heroes or other villains, in a constant battle for power and influence. Also, identity might be a theme. The character has to grapple with being seen as a villain and how that affects their self - perception and relationships with others.
The villain themselves would be the most interesting. Their journey from being a villain to embracing the light is full of potential for character development. They have to overcome their past, deal with their inner demons, and adapt to a new way of life. Also, any characters who oppose the villain's change could be interesting. They might be resistant to the idea of a villain becoming good and their reasons for that resistance can add depth to the story.
I think the villainess herself could be really interesting. She's likely to have complex motives and a unique personality. Maybe she's not a typical 'bad guy' but has her reasons for her actions.
Well, love and relationships are probably important themes. In many light novels, there are romantic elements, and in this one, the villainess might have a different approach to love compared to the typical heroine. Also, survival could be a theme. She has to find a way to 'live on' which implies she has to navigate through various challenges and obstacles in the story world.
Well, the themes include survival and adaptation. She has to adapt to the strange world she's in as a villainess and find ways to survive the various challenges, like dealing with other characters who might be hostile towards her. And love is a big theme too. She may fall in love or have to deal with the love interests of other characters, which can be really complicated and interesting.
The villainess herself is surely one of the most interesting. Her determination to break away from the expected villainous path and seek peace makes her stand out. Maybe there's also a love interest who is interesting because he has to deal with her new - found goal of peace instead of the usual villainess behavior. And perhaps a sidekick or a friend character who helps her in her journey to live in peace.
The plot mainly revolves around the protagonist who finds herself in the role of a villainess in a story. Instead of following the original doomed path of the villainess, she decides to change things and just live her life as best as she can in this new situation.