Sin System: Demonic Harem After Reincarnation

In a world where Systems reign supreme—godlike engines of power that elevate the chosen and crush the rest—Klein Slash was nothing. A worthless outcast, discarded and despised by the very society that worshipped strength. But fate is a cruel and beautiful mistress. Deep in the cursed ruins of forgotten lands, Klein awakened a horror beyond imagination: the Divine ARCHFIEND, a celestial nightmare that saw something savage in the broken boy. In a single cataclysmic moment, it bestowed upon him a System of unimaginable, legendary power. Now the weakling rises. Fueled by burning ambition and icy vengeance, Klein carves his path through blood and glory. He will claim endless wealth, shatter every throne, and make every soul who ever looked down on him scream his name in terror. The era of the forgotten has ended. The age of the Archfiend’s Heir has begun.

I'm Evan Cross, and my upgrade path requires genuine connections with women who actually challenge me. A martial artist who uses me as a training dummy. A genius hacker who won't let anyone in. Each bond unlocks abilities I need to stop being everyone's victim.

When the beaten and broken Seo Ireum is on the verge of giving up, a strange blue screen appears. [Do you want to live] After accepting the offer, he doesn't expect his path to head to the glittering stage of Korea’s most competitive idol survival show, Starlit and into the harsh world of the entertainment industry. Each mission brings him new skill, fame and power. But also reveals fragments of horrifying truth. His father's death wasn't an accident, his mother's death a lie and the system guiding him may be something far more personal than artificial intelligence. As Ireum rises under the spotlight, every applause hides a knife, and every stage hides a secret. In a game where beauty sells and betrayal wins, can he use fame as a weapon for revenge?

A College student who just entered University, Was suddenly shot by a wandering bullet and died in an unexpected way. His life was always riddled with tragedy, And for that, God had granted him another chance and was reincarnated into another world where Extraordinary Skills exist. But the expectations he had instantly shattered after he awakened and obtained the Skill, String Manipulator. "Wait, Why did I receive an E-rank Skill!? Did my bad luck accompany me even after my reincarnation!?" Follow our Protagonist, Axel Echevalier in his journey by Reading "Reincarnation of an E-Rank Skill User" Genre Tags: Action, Adventure, Comedy, WeaktoStrong, Romance, System, Genius, Overpowered. Please Support my Work. Daily Updates: 2 Chapters per day at 11:00PM (GMT+8) Words per Chapter: 1200~1500 BOOK COVER IS MADE BY ME. AgentGhost14

John was reborn in a parallel world in a poor family. As he had memories of his previous life so he was very mature and intelligent. But in the parallel world where money ruled everything, John was deemed a loser. During the high school final exam, David who came from a rich family was jealous of John. Thus David used the power of money to make John expel them from the school before taking the exam. John was helpless. But the matter didn't end thier. While John was returning home, he was surrounded by a few thugs hired by David and they beat him unconscious. After that, he opened his eyes in the hospital. But there was a virtual word floating in front of his eyes. " THE SUPER FARMING SYSTEM NEEDS TO BE ACTIVATED. DOES THE HOST WANT TO ACTIVATE IT?". After John activated the system his fate changed. Then he started his wonderful life. During the daytime, he was a hardworking farmer. During the nighttime, he was a gambler, assassin, doctor, etc. Read this book to know more about John

Note: There's Harem in this story. Rejected, due to being an human in the land of elves, Kevin was banished and casted into the river the very day he was born. But fate said he would live as he was rescued by the very person who casted him into the river. Every mage when they reach the age sixteen were told to attend the mage academy and Kevin, the abandoned human who had overheard the conversation of some students, got excited to attend this academy. He asked from his guardian if he could attend the academy but unfortunately, he was denied, all because of him being an human and not an Elf. At that moment, he became angry and had locked himself up in his guardian's workshop, that was a room full of all types of magical items. But while in the room, Xin had spotted a golden ring that instantly glowed as soon as it touched his bloody fingers. Surprisingly, he was given a system that granted him the opportunity to be an Elf. But what he discovered was that, he wasn't just an elf but a fairy and also an human. < New Quest > < Find the lost Diamond crystal of the Supreme goddess, that is hidden in the secret cave of the academy > < You have 90 days to find the crystal >

Bullied. Broken. Forgotten. Ego lived as nothing — an orphan crushed beneath humiliation and cruelty. When a final act of torment sends him into the path of a speeding car, his miserable life ends. But death is not the end. In the void between life and oblivion, he meets Asmodus, the Demon King of Lust and Desire, who offers him a contract: Power for devotion. Rebirth for servitude. Strength beyond imagination. Ego accepts. Reborn in a world where magic rules and desire fuels creation, he awakens the Harem Codex — a forbidden system that turns bonds, ambition, and longing into overwhelming power. This time, he will not be weak. This time, he will not be ignored. As kingdoms tremble, the Church brands him heretic, and demons watch from the shadows, Ego begins his rise — assembling allies, forging contracts, and reshaping fate itself. Because desire is power. And he intends to rule.

A famous warlord during the Austronesian era, was successfully appointed as the God of War. However, he died when he had just arrived in heaven. His sudden death saddened everyone who appreciated his sacrifice. However, after ten thousand years passed, the Warlord who created the beginning of peace was reincarnated. He was reborn into the Modern era. This figure hunted those who had killed him before.

Duth has died, along with his cousin. The tragic fate of two, the dearly loved another as family. However Duth returned to his world crashing down. Home town aflame, a lich choking his cousin.. Soon after his death. He wanted to stay dead, he was at peace. But centuries later that peace once more came crashing down. His cousins soul torn away from the realm of the dead, her pained agonizing cries stirred him, his rage. When he awoke from memories, the realm of the dead felt an untold rage! After a deal with a god Duth returns with the vengeance to sear stars, with him a gift follows. Will Duth find his cousin and slay those who dared step on the dead, or will he be consumed by hos hatred and hunt all of existence into deaths grasp?

Dragons attack humans. They are the devil king's subordinates. The devils uses them to kill humans. The devils need a new place for them to live. However, humans only found out about this on their last day alive. It turned out that the dragons were divided into two groups and they had committed the sin of killing the dragons who refused to become subordinates to the devil. Alexander Sawyer was shocked when he found himself alive again, one year before all of humanity was wiped out, and he received a system that required him to become a hero. [5 days after the devil king's subordinate dragons attacked humans.] [Congratulations on being chosen as a hero to save all humanity from the devil and the devil king's subordinate dragons.]