Sin System: Demonic Harem After Reincarnation

Lucian Storm knew there was a void in his past. At just five years old, he found himself swimming to shore, unaware of his own identity. He was found and saved by a mafia lord who was interested in him after seeing that the boy was stronger than an average human. Not just that, his irises… they were gold. Raised as a skilled gangster, he grew into a wealthy and handsome man. However, his downfall came when he fell for a woman. He could have died, but his Golden Eye System activated, revealing to him the secrets that lie on Earth and giving him the power to fight his enemies— the demons living among humans. In the process, he also uncovered the truth about his past.

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.

[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.

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?

In 2068, humans mutated to survive in the post-apocalyptic world. They got extra genes in their DNA, granting them cool abilities like super strength or shooting fire from their hands to battle the cruel monsters dominating the Earth. In New Orleans, a dystopian country, there was a special school to train young talents called Neogen High-School. All kinds of talents and abilities are there, and every Neogen graduate would become part of the New Government, joining the Elite Rangers, a special and highest-ranked force in New Orleans. However, Avery was an exception. He got into Neogen on a scholarship but got treated like an outcast 'cause he didn't have any special talents. He stuck at the bottom of the social ladder. Coming from a rough background, he was always underestimated, and even turned into a walking ashtray for his classmates. One day, he was thrown into a dark abyss by someone he thought was his only friend, and he fell into the bottom pit to meet his death. "Yeah, maybe this is the best path for someone talentless like me. Dying alone in a dark and lonely place like this." [Ding!] [All conditions for activating the 'Underdog System' have been met. Avery Blythe has been chosen as the host system.] [Underdog System will be activated.] [… 99%] [Underdog System activated. Complete all quests and climb the social ladder. Don't let the bullies win. Show that an underdog can beat them all!] "... huh?"

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.

🏆 ["Silver Prize" and "New Rising Star" in System Activated of "Meganovel Biannual Writing Contest"] 🏆Transmigrating into a cultivation world, Wushu Shengli found himself in an outer disciple’s body! With his trash cultivation talent, he feared that he wouldn’t live long in a world filled with young masters, hidden powerhouses, and immortal gods who could overturn the world! Fortunately, his golden finger arrived in time! [Cultivation Sign-In System has integrated into the host’s soul!] -Ding! [Since it’s the host’s first sign-in, the host will receive a random Supreme Grade reward!] -Ding! [Sign-in Complete! Host receives Supreme Cultivation Talent!] After receiving an unrivaled cultivation talent, Shengli truly felt invincible in the cultivation world! Cultivation resources? Just sign-in! Receive a thousand-year-old spiritual vein! Cultivation technique? Just sign-in! Receive the inheritance of a sword immortal! Cultivation physique? Just sign-in! Receive an Immortal Body Physique! Young masters? Just sign-in! Receive a Face-Slapping Manual 101! Jade beauties? Sorry, women will only affect the speed at which I draw my sword! “I become invincible after signing in!”

I thought Sofia was a faithful wife. She was always gentle and acted as if I was the only one. But when I went to surprise her on our anniversary, I was more surprised. I saw her making love to another man in our room. They even continued making love after they saw me. I was heartbroken and completely humiliated as a man. And what broke my heart even more was the reason she gave for cheating on me. She said I was just a poor man who couldn't make her happy. We divorced on the spot and I left angry and disappointed. On the way I passed through a very thick white fog and was instantly transported. I was in Smoky Hollow, a place in another dimension. I was given a system that changed my life. I had to hunt around Smoky Hollow to get coins that could be exchanged for money. I was suddenly a billionaire and I was going to make everyone who insulted me regret it.

Maximillian sees his girlfriend cheating on him with a popular student at his college, but he’s the one who is blamed because he’s poor and has no influence. His girlfriend doesn't even help him when he was about to die, but then a system screen appeared and instructed him to spend one million dollars within 3 days with a bigger prize money. It is a wealth system that can get him anything now. With that system, Maximillian is going to get his revenge, but it turns out that the person he is facing is not an easy one to beat. Maximillian couldn't just use the money he got from the system only, but he has to use his intelligence to make a strategy and defeat the rival with the maximum ability of the system. Could Max do it?

He is David Lewis, a young man who wants to stand high above the top of the world. Is it possible that he can make it happen with the support provided by the system. Follow the fun, don't forget to like and support, and make good comments. to build a good work...