Sin System: Demonic Harem After Reincarnation

I wasn’t reborn pure. I wasn’t reborn righteous. I was reborn unfinished. In a fractured fantasy world where cultivation advances through Marital Arts, power is forged through soul-bonds—vows that can elevate partners together or enslave them forever. Strength is no longer solitary. Love, betrayal, and shared destiny decide who ascends. Aren Valen awakens as the weakest outer disciple of the Azure Pact, carrying memories that should have died with him. In a past life, he was the Dragon Sovereign, erased at the brink of ascension by those he trusted most. Now, his Dragon Core is shattered and sealed, immune to orthodox cultivation. It awakens only through bonds freely chosen—not forced, not stolen. As ancient Dragon Veins stir, cultivation laws begin to collapse. Sects fall overnight. Empires rise on corrupted Marital Arrays that chain partners instead of empowering them. Defying all doctrine, Aren unlocks the forbidden Dragon Marital Codex, a path where power is shared without submission. Each bond awakens a Dragon aspect—Wrath, Wisdom, Dominion, Mercy—at a cost paid in trust and blood. Fate draws powerful women into his orbit: a sword cultivator haunted by memories of loving a Dragon, a rogue spirit alchemist hungry for forbidden truth, a fallen imperial princess seeking control, and a beast-blood warrior torn between instinct and reason. They are allies, rivals, and potential betrayers. But the past has returned. Aren’s former betrayers have reincarnated too, now ruling the new era—and they intend to erase him again by turning his own bonds against him. The Dragon needed a harem. The world is about to learn why.

[System activated] [I will make these two worlds and their creatures bow at your feet, my master] [Humans, elves, dragons, monsters, dungeons, kingdoms, wealth, power and everything. I will dedicate them all to you, my master] Raff Petterson, a young man who lived a miserable life in the real world. Failure and humiliation were all he got. But the hope for revenge came when the system inside his body activated. He can go to another world and return to the real world with his skills. He doesn't know, all the missions he undertook would lead him to the struggle for the strongest throne in the real world and the other world.

Kaiden, who has just been left alone because his family suicide, is now being chased by loan sharks because of the debt left by his family. Kaiden himself was almost beaten to death for not being able to pay the debt. However, while he was resigned to death, something strange came to his ears. [Your circumstances have qualified to become a master of the tycoon game system] [Welcome to the tycoon game system!] Kaiden recalled the strange voice he heard before he coughed up blood and passed out. It was exactly like the voice he was currently hearing from the hologram screen. "So yesterday was real?" Kaiden muttered, between confusion and amazement. [Right master, the system is real] [The system will help master become the richest man in this world] [The system will start the game to become a tycoon!] [Your level is level one] [The system will send some money into your bank account] [The money can only be spent on starting a business, not on personal consumption] [Every time the money is spent, you will only receive 50% of the money for personal consumption] [Now create your own business, or invest in other people's business, you are free to use the money only in the business field] [Have fun!]

They laughed when Kaelor Voss walked into the room. His ex-fiancée called him the poorest man alive. Security threw him into the rain. The hospital demanded $12,000 to save his little sister, His bank account held $18.63. With nothing left to lose, Kaelor climbed onto a bridge, ready to end it all. Then a voice changed everything. Infinite Wealth System Activated. Complete impossible missions, Build an empire. Crush everyone who stood in your way. Every reward brings unimaginable wealth. Every failure comes with a devastating price. But money is only the beginning. As Kaelor rises from a broken nobody to the most feared billionaire in the world, he uncovers a terrifying truth, the System never chose him to become rich. It chose him to survive, Because he isn’t the only System Holder. One hundred have been chosen. Only one will claim the ultimate inheritance. The rest will die trying. In a world where wealth is power, betrayal is everywhere, and every victory paints a bigger target on his back, Kaelor must decide how far he’s willing to go. Will he become the richest man alive… Or just another forgotten loser buried by the game?

Meteors hit the earth and unleash destructive monsters. Suddenly the selected humans got an extermination system. Humans who receive the gift of the system must protect other humans from attacks by increasingly crazy monsters. But can they defend the earth from looting monsters?

Elliot Kane is a scrawny, introverted college freshman at Crestwood University, relentlessly bullied by the campus elite: jocks, frat boys, and social media influencers who thrive on his humiliation. One night, during a particularly brutal encounter that leaves him battered in a dark alley, a mysterious cosmic anomaly binds an alien neural entity to his mind: the Death Mind System. This system grants Elliot a chilling power: by knowing a person’s true name and whispering their death in his mind, he can kill them instantly, their body collapsing as if their soul were snuffed out. No evidence, no trace; just a thought, and they’re gone. But the system isn’t just a weapon; it’s a living, evolving intelligence that feeds on death. Each kill upgrades its capabilities, unlocking new mental abilities: telepathic manipulation, memory siphoning, even glimpses into the victim’s final thoughts. The more Elliot kills, the stronger and more addictive the system becomes, transforming him from a timid outcast into a calculating force of vengeance.

🥉(Bronze Medal in "I Got A System in The Reality" contest) 🥉 Everyone treated Davis like trash, especially the Anderson family, where he was supposed to be considered part of the family. The only thing that kept him going was Susan, the first daughter of the leader of the Anderson family. However, when Susan chose to be with another man, Davis no longer had a reason to stay with the Anderson family. When Davis felt his life was at its lowest point, something unexpected happened to him. A system suddenly appeared and took him on a long journey to uncover his identity. [Conditions fulfilled] [Initiate the system installation process] [System installed successfully] [Heir Status activated] Cover By: Meganovel

After discovering the secret of the rich and why he was forever humiliated amongst his peers, Stan Gibson decided to leave the school made for the rich and elites back to the streets where he belonged. But on getting out, he was attacked by a group of tugs. At the blink of death, he was found and possessed by something called ADOTH. ***** “Adoth, what did you say you were again?” He asked with so much curiosity. [I have been called many names by different species in the universe, more often I was addressed as a system, so I guess you can call me that too. My aim which I already told you is to help my host save their planet from destruction but they have all failed in the planets which I’ve been to and now earth is next and it is up to you to save it or watch it being destroyed.]

An adult computer programmer Rin has himself transported to another world after having a lucid dream. Starting from nothing, he uncovers that he can use the world system and is able to use a powerful magic called star fall that destroys everything around him and makes him gain lots of experience causing him to level up at high speed. He becomes more magic as he travels and meets lots of girls who will play significant roles in his life in this new world.

Jael Monroe got betrayed by his girlfriend after he received a huge devastation. Angry and unwilling to resign to his fate, Jael looked for avenues to awaken his powers in this fierce world that dictates survival is for the fittest. When he was down in despair, he acquired the ultimate bloodline system that helps him grow stronger by absorbing others' bloodlines. With the powers granted by the system, Jael sought revenge while growing stronger enough to decide his fate and the fate of those who oppose him.