Perhaps it focuses on the journey of a character in the afterlife. It could show how they deal with new situations, meet other entities, and come to understand the nature of this new existence. For example, it might depict the character's struggle to accept their new state, or their discovery of a new purpose in this post - death world.
It may also be about the connection between life and the afterlife. How the actions and experiences in one's life shape what happens after death. Maybe it shows that certain moral or ethical choices made during life have consequences in the afterlife, and through the story of the characters, it makes the readers reflect on their own lives and beliefs.
Perhaps it's about the choices one makes that are equivalent to choosing between life and death. These choices could be moral, ethical, or related to personal desires and how they shape the course of a character's life or lead to their death in the context of the novel.
Given the title 'the valley of life and death novel', it may also have a theme of transformation. Characters might experience a significant change in their perspectives or personalities as they traverse through the situations related to life and death in the valley. It could be a story of how they come to terms with mortality, and this new - found understanding transforms them into different people by the end of the novel.
The main theme of 'A Life Death Repaid' could potentially be the exploration of love and sacrifice. Maybe it shows how characters go to great lengths for the ones they love, even at the cost of their own lives or well-being.
One of the main themes is likely the exploration of identity. Through the concept of 'life after life', the novel may show how a character's sense of self evolves or changes with each new iteration of their life. It could also touch on themes of fate and free will, as the different lives might be shaped by both external forces and the character's own decisions.
The main theme could be about the concept of reincarnation. It might explore how a soul experiences different lives and what it learns from them.
The 'A Matter of Life and Death' manhwa centers around the theme of life's preciousness and the determination to overcome death. It shows how characters fight for their survival and find meaning in the face of mortality.
The main theme seems to revolve around survival and the choices one makes in extreme circumstances.
The main theme could be the exploration of the thin line between life and death and the profound impact it has on characters.
I'm not sure as I haven't read the book. But typically in a novel about life after death, there could be a protagonist who has recently passed away and is now navigating the afterlife. There might also be some sort of guide or mentor figure who helps the protagonist understand this new realm.
It could potentially be about the journey of a character in the face of death, with'saint' representing some kind of spiritual or moral guide. Maybe it shows how the idea of a saint can bring hope or meaning in the context of death.