Sin System: Demonic Harem After Reincarnation

Nathan Hunt, a young man burdened by his father's debt and trapped in a loveless marriage to the daughter of his tormentors, finds his life turned upside down when a pair of inherited dice unlock a powerful family secret - The Fortune System (FORST). This sentient system promises wealth and freedom, but at a cost: weekly challenges with unpredictable rewards and punishments. Driven by the promise of vengeance and a desperate need to reclaim his life and rescue his sister who's also a slave with his in-laws, Nathan embraces the FORST's gamble. Each roll of the dice unlocks not just wealth, but the perfect means for retribution and revenge. It's time to take revenge, time to take over their world, time to make them pay.

After being electrified, Roug crossed through a strange world. But instead of coming there in his own body, someone forced his soul into a monster's body, and his soul got inserted into a goblin's body, not to mention it's just a malnourished kid. Now being a goblin, he must survive in this strange world full of magic and fantasy. But even after that, he wants to return to his original world. But his system, it's pretty nasty, always making things difficult for him and forcing him to live in this alternate world despite Jiro's numerous rejections. Will the system succeed in making Jiro stay in her world? Or Jiro would still find his way back into the real world? [ Congratulations: The soul insertion has been completed, and the host has found a new body ] The system notified. " Insertion? What does that mean? I need my real body, I want to go back to my world ". [ I am sorry host, but you can't return. I hope you won't make things difficult for me, I am also a poor soul ] (Attention: The cover image is not mine, it belongs to its rightful owner)

Alexander Albert is treated like trash by everyone around him because he is broke. What happens after he realizes that he is worth more than he ever could imagine?

James, a college student struggling to escape his poor and weak life, takes on a delivery job to cover his remaining tuition fees and personal expenses. His relationship with Selena is the only source of happiness in his otherwise bleak existence until it is extinguished by her betrayal. She cheats on him with Randy, the arrogant and affluent star quarterback. Devastated and consumed by anger, James decides to confront Randy but is struck on the head, resulting in a concussion. This concussion triggers a mysterious system called "Opportunity System" that grants him one million dollars. The catch? He has only three days to spend it all. Will he manage to spend the entire sum in time? What will happen when James eventually discovers that the mysterious system was not what it seemed, but rather a scheme devised by RJ Black?

Ethan Blackwood, once the overlooked son of a powerful family, is betrayed and left for dead by his own kin. In his final moments, a mysterious system activates within him, offering a second chance at life and power. Now reborn with abilities beyond imagination, Ethan embarks on a journey to reclaim his rightful place and exact vengeance on those who wronged him.

When I woke up with a hangover, I found a handsome and naked stranger sleeping beside me. --- I’m Tanya, a surrogate’s daughter, an omega with no wolf and no scent. On my 18th birthday, when I planned to give my virginity to my boyfriend, I found him sleeping with my sister. I went to the bar to get drunk, and accidentally had a one-night stand with the handsome stranger. I thought he was just an ordinary werewolf, but they said he was Marco, the alpha prince and the most powerful Lycan in our kingdom. ‘You slut, you’re pregnant! Fortunately, Rick is kind enough to let you be his mistress and save you from shame.’ my stepmother said, tossing a pregnancy strip on the table. Rick was an old pervert. No she-wolf could keep up with his sexual demand. No she-wolf could survive with him more than 1 year. When I was in despair, Marco came to my rescue. He got down on one knee, took out a ring and said he would marry me. --- I thought Marco married me because he loved me, but later I found that was not the truth…

"I will come to take my revenge on them!" John Alan, a hardworking man who had to die due to being hit by a bus. He died with a grudge against the fraudsters who had taken his parents' money. Previously, Alan had to go into debt until he was pressured by debt collectors. As a result, both of Alan's parents committed suicide because they could not stand the pressure of debt and economic difficulties. Alan had to live with all these burdens alone until the accident freed him from the world. Irena feels sorry for Alan's tragedy. She kidnapped Alan's spirit before heading to the afterlife to be reincarnated. Alan agreed and he was reborn into a boy named Arryn Vaughan in the Athanor Empire. Arryn arrived at a place filled with system and magic, something he had never done before. Arryn was gifted an extraordinary power that could make him cross various worlds in another universes. He plans to use this power to take revenge on those who have ruined his life while on Earth. Can he get his revenge? So what will he do with the power he has? . . *** Welcome to my first story. Set in a unique and unexpected world of magic and parallel worlds. There will be many new adventures. So, keep reading the story.

Prologue   Maverick Michelson, a young man in his early twenties who was struggling at the bottom of society had his world shattered when his family died and he learned that his girlfriend used and betrayed him.    Weak and without strength, he was going to be cruelly tortured to death after learning about his girlfriend's betrayal but at that time, a mysterious artifact hidden within his soul called a system awakened and granted him the strength to free himself and escape.     Maverick had lost his family, and his love and no longer had the will to live but with the help of the system, not only did he rise from the ashes, he also attained the capital to seek revenge.      Maverick strives to attain strength with the system to seek revenge and make his girlfriend and all those who were involved suffer a fate far worse than his family had.

Marcus Thornwood is an inspiring actor who went to Hollywood in the hope of making a name. However, his dreams shattered before it was even shaped. His girlfriend cheated on him with his cunning cousin, Eric. Worse, Eric's sinister plot led Marc being crippled and in a mountain of debt. He became a beggar who beg for money and food. Just when he thought everything was over, something happened to him that would change his life forever. Ding! [ Activating System... ] [ Verifying Host... ] [ System Online! ] [ Customizing Host Experience... ] [ Host: Marcellus Thornwood | Aspiring Actor ] [ Host Goals Assessed. System Configuration Complete. Objective: Help host achieve superstardom. ] (This novel is in the process of editing. )

Lonan Karran's wealthy life was turned upside down by people's betrayal. And that made him live in contempt of the people. Lonan was humiliated and laughed at. When he was about to die in the pool, a system appeared that allowed him to make a lot of money. [Welcome to the Streaming System!] With the system he had just acquired, his life changed again. It's time to become famous!