Sin System: Demonic Harem After Reincarnation

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?

Robert Mitchell has always had a passion for cooking, but life has never been easy for him. After losing his parents at a young age, he was forced to fend for himself, using his creativity and resourcefulness to turn scraps into meals. Despite the odds, he worked hard to become a skilled chef and opened his own small restaurant. But disaster strikes when his restaurant is destroyed in a catastrophic event, leaving him with nothing. To make matters worse, his girlfriend betrays him. Desperate for a way to survive in a post-apocalyptic world where food is scarce, Robert discovers that he has a unique Superpower Gourmet System after a small accident. He then embarks on a perilous quest to discover a new food source and elevate himself to the title of the world's greatest master chef, armed with his newfound skill in manipulating the taste, smell, texture, and appearance of food. But he quickly learns that in a world where everyone is fighting to survive, his Superpower Gourmet System may be his only weapon against rival survivors and dangerous creatures. Will Robert be able to harness the full potential of his Superpower Gourmet System and save himself and those he cares about? Or will the challenges he faces be too great to overcome?

🏆 No.1 book of "The Ultimate Fantasy" Contest 🏆 Alucard was an ordinary high school student who just wanted to graduate quickly and find a job, but one day, a strange incident happened that made him transmigrate to another world. A world where magic and other powers are everywhere, a fantasy world. Beyond expectations, in a new world, Alucard had to lament the bitterness of life because he was banished, deceived and even wanted to be killed, but who would have thought that behind ordinary strength, Alucard was a god that people feared, a God of system analysis. [Ding!] [System activated!] [Welcome back, lord Alucard!]

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.

There seemed to be no way for Darrin to protect the girl he was in love with, until a system popped into his head. "Ding! The super lavish system has been successfully bound! The host can ask for anything and the system will grant it!" With the power of his system, Darrin not only felt reborn as a new person, but he also realized he had the potential to achieve something great in the world, making a positive difference beyond what he had ever imagined.

[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.

Persues Damon had always been ridiculed all his life. Being a college student and a real life loser. He was unable to take care of his family and was always oppressed by rich people. The girl he loved the most cheated on him with a rich man and murdered him. Only for him to awaken with a system. He is going to make them pay, alongside everyone that hurt him. [Ding!] [The System finally recognized its host.] [You have two choices: A, Accept the system and live. B: Reject the system and die miserably.]

Danzel Harrington was furious. His older sister, Helen, was discarded after being humiliated by Bash Merrick and his friends at the prom. She came home in a deep state of depression and closed herself off, only to tragically take her own life not long after when the photos of her being r*ped were spread on the internet. While the evening before, Helen had just received a letter of acceptance from her dream university with a scholarship program, and it all fell apart overnight! After that, he saw Lyra, his girlfriend, cheating on him with none other than Bash Merrick, the same man who r*ped his sister. When Danzel confronted them, he lost control and attacked Bash and his friends. As a result, he was sentenced to a 10-year prison term. His parents, who worked as gardeners and cleaners at Bash's house, were also fired from their jobs. The suffering didn't end there. Danzel had to endure the loss of his entire family due to the malicious deeds of the Merrick Family, the wealthiest and most influential people in his town. The relentless suffering drove Danzel to make a vow for revenge. With the assistance of The Ultimate Revenge System, he was determined to rise to power and become the most influential figure in Dustown.

Brooke Rancher was known as the harbinger of misfortune. Everywhere he went, disaster followed. They believed his presence brought them bad luck. But Brooke turned his luck around when he found a fortune-teller cookie and ate it, then he was now the host of THE FORTUNE-TELLER SYSTEM, where he saw threads of destiny, predicting outcomes with uncanny accuracy. People began to seek him out, eager to know their futures.

He thought he had the perfect wife. He was wrong. Lyon had spent five years believing Racheal was the woman who loved him, supported him, and waited faithfully for him to come home. Until one night, he walked into his boss’s bedroom and found her there. What shattered him even more than the betrayal was discovering that Racheal wasn't a helpless victim. When Lyon tried to save her, she turned against him and his own colleagues bowed before her as though she were someone far more powerful than he ever imagined. Left to die in a mass grave, Lyon's life should have ended there. Instead, a mysterious system awakened. [Welcome, Operator.] With only 3% health remaining, Lyon is given a second chance and this time, he won't be the loyal guard everyone can trample on. He will uncover the truth behind his wife's betrayal, the secrets of the Jameson family, and the mysterious power now residing within him. He was betrayed once. He won't make the same mistake twice.