Another theme could be the contrast between good and evil. The saint and sinner are extreme opposites, and the fanfic might explore how they coexist or conflict with each other. It could also show how the line between good and evil is not always clear - cut, as the saint might have some flaws and the sinner some redeeming qualities.
I'm not sure which specific 'sinner or saint' story you are referring to. There could be many stories with such a title. It might be about a person who has done both good and bad things in their life, and the story explores whether they should be considered a sinner or a saint based on their actions.
Well, it could be a story of redemption where the sinner strives to become a saint. Or maybe it's a tale of how a saint falls into temptation and sins. Another possibility is a complex web of events that test the boundaries of both saintliness and sinfulness.
One main element could be the character's actions. The bad actions would label them as a sinner initially. For example, if they cheat others in business deals, that's a sinner - like behavior.
There are so many fanfics out there, and finding good 'a saint a sinner fanfic' might take some time. You could start by looking at the most popular or highly rated ones on platforms like Archive of Our Own. Check the tags and summaries to see if they match what you're interested in.
[Mysterious World: I Became a Saint by Life Providence is a fantasy novel written by Baby's Small Waist.] The story was about the protagonist, Chen Donglai, who had transmigrated to a world where martial arts flourished and demons were in chaos. He had the ability to modify his talent and fate. He pushed his way forward and killed powerful enemies. In the end, he reached the peak and became a Saint with his Life Providence. The novel had been updated to chapter 233, and the latest chapter was chapter 231. In this world, martial arts flourished, demons ran amok, immortals and buddhas disappeared, and evil gods and strange immortals watched covetously. The aristocratic families controlled their martial arts and never leaked them. They were cold and heartless to the world. Chen Donglai relied on his own ability and the change in his fate to become the Connate Saint Body Dao Fetus that the gods bowed to.
" I Become a Sage for Hongyun in Untainted Land " was a novel that traveled through the Untainted Land. It told the story of the protagonist Hongyun who awakened the Destiny Choice System after becoming the most unlucky person in Untainted Land. From then on, he began his journey to becoming a Sage. He was faced with the choice of going to the Purple Cloud Palace to listen to the Dao or not going to the Purple Cloud Palace to listen to the Dao. Each choice had different methods and rewards. Hongyun chose to go to the Purple Cloud Palace to listen to the Dao and opened the path of cheating cultivation. He had magic treasures, spiritual roots, goddesses, and grotto-heavens, becoming the number one boss in the Primordial World. With the Heaven-Opening Axe in his hand and the Jade Plate of Fate above his head, Hongyun controlled the entire Untainted Land. As for the specific plot and development of the story, he needed to read the full text of the novel to understand.
The ancient novel that I recommend to you is " The Plain Hands Doctor ". The main character of this novel was Fu Yao, a deceased doctor with excellent medical skills. She was reborn in ancient times and became a person who was demoted to the daughter of a criminal. In order to overturn the case, she used her medical skills to help people and worked hard to change the fate of herself and her family. This novel is full of emotions and elements of business and farming. I hope you will like it.
The 'Sinner' comic has a complex and thrilling storyline. It involves a protagonist dealing with inner demons and external conflicts in a dark and mysterious world.