Sin System: Demonic Harem After Reincarnation

"You're a dirty poor orphan, who doesn't belong here in this University!" Mason Williams is a 21-year-old college student who is constantly reminded that he is irreverent and wretched by society, but everything changes when death slaps him into the life of a celestial billionaire heir. "My name is Mason William the Second, son of Grace William the First, heir to the Williams empire, host of the celestial system, and the master of the celestial assassins. With this, I pray heaven will help those who trespass me!"

Matteo De Cannio's life took a drastic turn when his parents, Mr. and Mrs. De Cannio Militao, passed away in a tragic road accident. Left in the care of his wicked stepmother, Lily De Cannio, Matteo's life became a living hell. His stepmother, a notorious drug dealer, mistreated and bullied him relentlessly. Despite the hardships, Matteo's fortunes changed when the Italian Government offered him a scholarship to study at a prestigious university. However, his stepmother refused to let him accept the offer. Forced to sell his stepmother's illicit drugs on the streets, Matteo's life took a devastating turn when he was killed by the police. But fate had other plans for him. Matteo awakened in a London hospital with a mysterious System that promised him unimaginable wealth and power to exact revenge on those who wronged him. His stepmother, who had killed him, was at the top of his list. With his newfound wealth and fame, Matteo became a force to be reckoned with, establishing big companies around the world. But as he plotted his revenge, he couldn't shake off the feeling that his stepmother's wickedness would not be easily defeated. As Matteo navigated his new life, he wondered: Would he survive his stepmother's evil schemes, even with his newfound power? What would happen when Mrs. Lily De Cannio discovered that Matteo was alive? The battle for revenge had just begun.

Caden Kelly was an ordinary university student struggling with debt, an exhausting part-time job, and a mundane life—until one fateful night when he received a mysterious System Activation. Suddenly, he could see stats, unlock abilities, and receive quests. But unlike conventional systems, his came with an unexpected perk: The Bonding System—a unique ability that allowed him to grow stronger through relationships with women. With this newfound power, Caden is thrust into a world of hidden sects, ancient legacies, and dark conspiracies. As he navigates his way through increasing power struggles, he begins to uncover a shocking truth: the system wasn't just a gift—it was a curse with a purpose.

Living a happy life as the heir of the Smith family and the wealthy son-in-law of the Martinez family, Richard's life suddenly takes a sharp turn when he is cheated by his siblings and left without a penny. Stripped of his inheritance, he ends up living a disgraceful life with disdainful in-laws who treat him like trash. Just when he thought his life was over after he was thrown off a cliff, it instead served as the start of his rise back to the top as he wakes up with a mysterious black phone that gives him money as long as he completes missions, unlocking a world once unknown to him, leading him down a path of riches and vengeance!

"Yeah, listen up. I want to order a pizza, but don’t screw this up, alright? I don’t have time for incompetence from some broke ass pizza delivery guy.” That's the first thing Niko heard when he answered the phone, “who the hell orders pizza like that?” He sensed the arrogance from whoever was behind that thick voice over the phone. But he ignored the rudeness and asked him “Sure, sir. What can I get for you today?” “Dumbass I already said I want a large pizza. What else do you sell if not pizza?” Things like this always made Niko hate his job, he'd been working in that pizza shop for almost a year and he never got used to all the insults and harsh treatment. But he was willing to keep enduring all of it as long as it fetched him some money to take care of himself and his girlfriend Vikkie.

An honorable knight had just died on the battlefield, but his lost soul entered an empty body in another world. Living as the underdog Alexander, he surprises everyone with his prowess in wielding the sword relying on his combat skills from his past life. Not only his father, Baron Leville and almost everyone else in his family, but until King William VIII was impressed by Alexander. Getting so much attention in such a short and unexpected time, will definitely give some people jealousy. In fact, there are no exceptions for people who are blood relatives!

Benedict Muller was born in the modern time when the evolution of technology and science made waves in human genetics and the universe. Everyone has special powers. There are rankings based on the level of their powers. The possessors of these powers are called Aetherians, and they began to rule civilisations around the world after a major change. Only rich families will always excel as they influence to be in control. Poor people like Benedict Muller could only accept the conditions, especially since his family lost their wealth. When Benedict was 18 years old, he decided to join a military group to fight and earn a decent living. With last hope and strong determination, Benedict took the test. But before he knew it, the greatest evolution of science happened. The system synchronised with Benedict. It was time for Benedict Muller to rise.

Anthony Martinez was a poor student, abandoned by his father's family. His girlfriend absconded with his meager savings, making him unable to pay his sick mother's hospital bills which led to her death. Not just that, his girlfriend left him for the school billionaire playboy. It can be said that his life kept going downhill. However, that was to be the end of his misfortunes because he awakened an amazing quintillionaire's spend-thrift system, which supplied him with money, endlessly. In exchange, Anthony will perform missions to earn contribution points, which can then be used to acquire more wealth from the system. He can finally take revenge on those who trampled on him, dominating the world while helping the needy. **** But the endless supply of money didn't come free. The life-threatening missions which the system sends him on were objects of eternal nightmares to the hero, who suddenly found out that the fate of the entire world rests on his shoulders. Join Anthony Martinez in his thrilling but frightening adventures and face-slapping missions, having a wonderful time is definitely assured.

In a world ruled by the Ascension System, survival is permission-based. At eighteen, every citizen is evaluated, awakened, and assigned a path. Those who fail are erased—cleanly, legally, without regret. Kael Ashborne fails. Declared unawakened, Kael is sentenced to execution inside a system-controlled dungeon. No skills. No stats. No divine interface to save him. His death is calculated, approved, and inevitable. Except it doesn’t happen. Through instinct, defiance, and choices the system cannot predict, Kael survives becoming a contradiction the Ascension System cannot classify or correct. Instead of granting him power, the system begins to observe him. Study him. Adapt. Hunted by system-enforcers and shadowed by a hidden group known as the Erased—people who exist outside recorded outcomes—Kael learns a terrifying truth: the system does not rule by strength, but by certainty. It closes futures, locks outcomes, and sacrifices possibility to maintain order. Kael can break those futures. Not by overpowering the system but by invalidating its decisions. As the system escalates from observation to rollback, rewriting time and reality to erase him, Kael’s existence begins to destabilize the world itself. Cities fracture. Laws glitch. People suffer under the cost of wasted authority. Forced to choose between survival and responsibility, Kael steps into a role no one was meant to fill: a living anomaly capable of reopening closed destinies. The system calls him a catastrophic variable. The world may call him something else.

Ramon had just ran away from home. He had his father, Andreas sent to prison for bullying his smoking addictive mother since he was a little boy, but now that he is grown up, he is the bread winner of his family and even had to provide for his mother. Roseline, decided to be a nun just to help Ramon study after he got a scholarship into a prestigious university. Ramon was happy thinking he could get rich and study just to change his poor fate and help his mother. He met with Chloe who was infatuated with his cold attitude but later she made her intention known. She dated him because she believed he was rich. When Ramon knew she left him for Xavier, who has his eyes on Chloe for a long time. Xavier even had Ramon crippled and just when he thought his life was over. A gaming system appeared on his phone promising revenge and not only that but wealth beyond his wildest dream.