Sin System: Demonic Harem After Reincarnation

In this world, things are very difficult for everyone, but people find their way to get by. Some work hard, some sell and negotiate, while others… Hunt monsters? Meet Leonard Flint, an aspiring hunter with an eccentric personality, and his friends Adam Archen and Charlotte Chloe, in their normal, mundane and relaxed live. Except that for them, this means dealing with wild monsters and powerful maniacs. Follow the journey of three young people trying to survive in the modern and decadent world, as they increasingly find themselves facing a conspiracy that could change everything about that world upside down.

William's life as an orphan has been miserable since childhood. His life didn't change until adulthood; cheated on by his girlfriend, humiliated, fired from his job, and evicted by his landlord. However, his life changed after obtaining the Limitless Destiny System which allowed him to change his destiny to become whoever he wanted.

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.

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.

The worth of a man is not defined by how much he loves and cares for his family, but how much he can provide for his family. Dean Weatherman was the live-in son-in-law of the Hallfield family. Forced to marry Loveth Hallfield whom he loved so much, due to a scandal orchestrated by a love rival. Dean literally went through the humiliation chamber, and even his daughter was not accepted by the family. Eventually he got tossed out by the family, along with daughter, a toddler. But is this the end? No, it's actually just the beginning of his story. With a system that grants 100× reward on any cash he received or earned, Eden will begin his arduous and dangerous climb to the top. His aim? Bring down all the top families who have ever stepped on him. Why wait to the end to slap them, when you can do that every single time you get the opportunity. This isn't a story of good and evil, and Dean isn't a kind-hearted hero. In this story, it's kill or be killed, a dog eat dog world.. and Dean is ready to do whatever it takes to get to the top and keep his daughter safe.

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.

Victor Valentine's life couldn't be any worse: releasing an album that didn't make any official charts after three weeks of tracking, being abandoned by his girlfriend, chased away from his record label, and being beaten by the man whose girlfriend cheated on him with, to the extent that he was hospitalised. Everything changed when Victor Valentine heard a robotic voice in his head: "Do you want to become an entertainment god?" "Yes" Binding.... 10%, 50%, 80%, 100% Complete "Host, you now have the potential to be an entertainment god."

After dying in an accident, Alex awakens in another world in the body of a poor student who was betrayed by both his girlfriend and his best friend, then beaten to death in a dark alley. A mysterious stone that followed him across worlds awakens the Superstar System, turning effort and discipline into growth. Carrying two lives’ worth of regret and one unfinished dream, Alex steps onto the path of fame, determined to rise from nothing and reach the stage that once felt impossible.

When the orphaned outcast Frank Williams discovers a dying creature glowing in the ruins of his world, his life is rewritten by a power beyond imagination. A hidden system awakens within him—amplifying his mind, warping reality itself, and dragging him into a city where every man must marry or die. But beneath the king’s twisted law lies a secret darker than death: a ritual for immortality fueled by human souls. As Frank rises from the dirt to defy the throne, his power grows, and so does the price. Betrayal, madness, and love collide as the system begins to think for itself. And when it finally turns on him, Frank must decide: become the god the world fears… or destroy the only thing keeping it alive.

Chosen by the System, Rhys gains powers beyond imagination—but when his sister is kidnapped, he discovers the Tower’s trials are a trap set by the gods themselves. To save her and survive, he must confront monsters, betrayals, and the darkness within himself.