My Lewd Symbiote System

Intelligence, Deceit, Cunning and Luck are concepts that tie to genius. Louis, who was born with above average intelligence, got all four concepts and became a true genius. And a true genius becomes a double-sided sword. Will it be a problem solver? or even a trouble maker? It all started when Louis got an injection of nanoparticles into his body. Something much higher than modern words appears and changes Louis' life. The system appears and allows Louis to make the impossible possible. He will easily solve the criminal cases he handles. What awaited him in the days to come were cases that were more complicated and would require even greater effort to deal with. (Some events that occur and locations are indeed inspired by the real world but have nothing to do with real life)

Adrian Azuma was an ordinary high school teacher with a quiet life and a loving wife until a vampire took everything from him. When Sarah is murdered, the authorities dismiss her death as a tragic accident. But Adrian soon discovers the horrifying truth, vampires secretly live among humanity. Desperate for revenge, Adrian is recruited by Lirielle, an elite vampire hunter and member of the mysterious organization known as Black Cross. Determined to find the vampire responsible for his wife's death, Adrian joins the organization and begins his brutal training. Then, after killing his first vampire, something awakens within him. A mysterious system. > The more vampires you kill, the stronger you become. Every kill rewards Adrian with Blood Points, allowing him to enhance his physical abilities beyond the limits of an ordinary human. By day, Adrian returns to his life as a teacher, hiding his new identity from his students and colleagues. By night, he becomes Shadow, a Black Cross hunter hunting Vampires that lurk among humanity. But ordinary vampires are only the beginning. As Adrian grows stronger, he discovers that the supernatural world is far more dangerous than he imagined and that the system may have a purpose beyond simply making him stronger. He wanted revenge and the System gave him power. But how much blood will Adrian have to spill to uncover the truth?

Jilted at the altar by his girlfriend on his wedding day, mocked by friends and family, and scorned by the media, 30 years old Arnold Stone thought all was lost when he was then attacked by mobs and hit by a truck on that same unfortunate day. Mysteriously he survived the accident unhurt and unscathed without bruises, and wakes up a changed man, who’d also become the host of a dark super lavish system called the Nexus. Binded to the instructions of this system, he is asked to accomplish various tasks, and quests in order to unlock points and embark on a journey of vengeance on those who hurt and ridiculed him. Also, he is no longer Arnold Stone, the poor grocery owner who barely had a dime to his name. Now he is the host of a system worth trillions of dollars. King of the underworld and a rising Trillionaire!

Kai Wang died a loser–beaten to death in an underground fight while he watched his girlfriend kiss his killer. Kai gets a second chance at life–but it comes with a price written in blood. Granted by a mysterious system run by seven faceless beings. Now reborn with power he must fight his way back to the top while completing missions for his faceless masters. He must save his dying mother, destroy those who betray him, and become the unstoppable figure no one expected. But every mission pulls him deeper into darkness and one question remains–will he save his soul or lose it chasing power?

In a world where beast ranks determine a person’s destiny, Adrian Cross is branded a failure. At eighteen, he awakens the weakest talent imaginable: Faint Bond, Rank F. With only one beast slot and no powerful guild willing to recruit him, Adrian’s only goal is to survive and provide for his sick younger sister. Everything changes when he discovers an injured black creature trapped in silver wire inside the forbidden Old Gate District. He frees it, and his blood awakens a power that should not exist. [HIDDEN TALENT DETECTED: INFINITE EVOLUTION.] Adrian names the mysterious creature Nyx and discovers a hidden system capable of unlocking missions, evolution paths, and extraordinary abilities. But Nyx’s species cannot be identified, its true rank remains unknown, and its shadow sometimes reveals a terrifying form far larger than its tiny body. When the powerful Crown of Fangs guild offers a reward for capturing Nyx alive, Adrian realizes that his discovery has made him a target. To protect his companion, he must enter Halcyon Academy, survive deadly trials, outsmart powerful rivals, and grow stronger without understanding the true limits of his system. Yet Nyx is not the only mystery connected to Adrian. A message left by his missing father reveals the existence of an ancient Threshold and a forgotten order of Wardens. “If a black one comes through, do not let the Crown count it. Do not let them name it.” As hidden enemies close in and something beyond the sealed gates begins to awaken, Adrian must uncover the truth before the world discovers what Nyx really is. They called him the weakest tamer alive. They have no idea what he is raising.

Ethan Cross, a struggling orphan living in the slums, awakens a hidden system after a life-threatening encounter with a powerful noble. The system grants him access to hidden knowledge, martial skills, and an evolving interface that allows him to manipulate reality. Ethan begins his climb from the gutter, navigating through dangerous political games, ruthless guilds, and ancient dungeons. As his power grows, so does the danger — for the system he wields holds the key to an ancient prophecy that could reshape the fate of the world.

In a world where strength rules, Oliver is nothing—a talentless outcast doomed to be weak. Beaten down and forgotten, he’s on the brink of giving up… until a mysterious system awakens within him. It whispers of power, demanding he complete dangerous tasks in exchange for strength. With every mission, he levels up, evolving from a nobody into a force to be feared. But the path to the top is ruthless, and the system has its own secrets. Will he conquer destiny—or become its pawn?

Ruan Visser was a nobody until he was forcibly bound to a malfunctioning high-tech System that treats romance as a high-stakes survival game. His mission: seduce Elzandri Van Dyk, the ruthless 'Ice Queen' of the elite who fires men just for looking at her. Armed with glitchy abilities like 'X-Ray Sincerity' and 'The Perfect Smirk,' Ruan must climb the social ladder while dodging the lethal schemes of a jealous golden heir. In a world where failing a date means game over, Ruan must decide if he is playing the system, or if the system is playing him.

They tried to kill him on his birthday—just to take all his wealth. All this time, Logan thought he had nothing. But the truth was far more cruel: all the suffering he had endured was the doing of his own uncle, who treated him like trash within the family. On the night he was on the verge of death, a goddess appeared before him. Out of pity, she granted him a system that changed everything—the Multiplier Compensation System. From that moment on, Logan’s life changed. Wealth, power, everything began to grow without limit. He no longer cared about anyone… except for one thing—revenge. He built himself into an existence with infinite wealth, someone no longer controlled by anyone. “Now… you’re begging me?” “This is my ‘kindness’—to atone for all your sins.” And for those who once destroyed him, endless suffering would be the only fitting punishment.

​Arlan Mahendra was born a "mistake"—an illegitimate son destined to be trampled by his elite half-brother and the ruthless Mahendra family. Beaten, bankrupt, and left to die in a rainy alleyway while his mother lies on her deathbed, Arlan screams for justice. ​The Universe answers. Not with a guardian angel, but with a cold, digital ledger. ​[System Activated: Karma Debt Collection] [Target: Julian Mahendra] [Debt Status: Unpaid. Penalty: Seizure of Lifespan and Luck.] ​Armed with a system that turns every insult, bruise, and betrayal into "Debt Points," Arlan rises from the gutter. He discovers he can forcibly collect "payments" from those who wrong him—stripping away their health, their talents, and even their remaining years of life. ​He doesn't want an apology. He doesn't want peace. He wants to audit the world. ​From stealing the vitality of arrogance billionaires to seizing the luck of corrupt geniuses, Arlan becomes the world's most terrifying creditor. ​They say revenge is a dish best served cold. For Arlan, it is simply a transaction. And everyone is about to pay up.