Sin System: Demonic Harem After Reincarnation

Asher has always been at the bottom of society due to poverty. He lost his job, Lost his girlfriend, Almost lost his life and got framed of stealing all on the same day. His life was close to its end with no powerful family to back him up against his foes. But then due to mysterious encounter with an old man, his fate changed. [[ BILLIONAIRE GOD SYSTEM ONLINE ]] [[ DING! Money has been sent to your account ]] A system that rewards more money for spending money. A system that grants monetary reward for task completed. [[ Worth: $100 Trillion ]]

Tahir, yearning for a beast hunter's life, remains an outsider in a society preparing for another war with the Aliens. A mysterious package arrives, containing a letter from the military academy and a peculiar box labeled "System." This unexpected turn awakens him to hidden abilities and the unsettling presence of two voices within his mind. Unfolding the journey with his "System." Is he destined to be a warrior, a beast hunter, or something else entirely? Can he forge his own path while embracing the looming conflict? Join Tahir on his extraordinary journey as he unlocks the "System's" potential, navigates the voices' guidance, and faces the uncertainties of war. Can he unravel the mysteries of his past and claim his place in a world teetering on the brink? Discover the answers in this captivating tale of self-discovery, hidden truths, and the fight for survival in a world on the brink.

"I will be the Godly Sorcerer! For the sake of my mother and my sister!" When monsters from another world invaded Earth through Magic Gates that appeared without warning, the world collapsed into chaos. From the ruins of civilization, the most powerful organization was born: the Knights—an elite force armed with magic forged from materials of the monster world. Humanity's survival now depends entirely on them. I, Ashen Crowe, a lowly F-Rank Knight, lived a life that was nearly worthless—until a tragic accident almost claimed his life. On the brink of death, I was saved by a mysterious entity from the monster world: Zerion, the Strongest Sorcerer from Monster Realm. But that salvation came at a cost— I was bound to the Godly Sorcerer System, a ruthless system that offered only two options: grow stronger… or die.

The enhancement serum was meant to create superhumans—faster, smarter, stronger. Instead, it wiped out most of civilization and turned the rest into Hollowed: vicious, mutated monsters. Elias Mercer should’ve been dead. Instead, he became something new—immune, stronger than a Hollowed, and guided by a mysterious (possibly digital) voice in his head. He’s the first successful mutation—and now, everyone wants him. Hunted by Viratech, the shady corporation that created the virus, Black Sun, a ruthless cult with dark motives, and other mutated survivors who’ve lost their humanity, Elias is stuck in a crumbling world ruled by chaos. His body keeps changing, the System in his head grants strange abilities with dangerous side effects, and his forgotten past might hold the key to everything. To survive, Elias must uncover the truth behind the virus, his own identity, and whether saving the world means losing what’s left of himself. Monsters. Mutations. Mystery. And a war on the horizon.

What would you do if one day, monsters appeared in your world? Will you fight to save someone? Perhaps you will fight for your life? Tejasv, a common man, faced a similar situation when monsters appeared in his home. They killed his mother, the only person in his family. Out of rage, he kills the monsters brutally. Suddenly, a voice enters his ears: Beep! Beep! ==== [Congratulations! You are qualified to live in this new world.] [You have gained territory. Fight others and build your territory stronger.] == == A system screen appears and gives skills to all humans. It encourages people to fight and invade. Now the world is being invaded by monsters and other races. Humans are forced to fight and defend their territories as lords or as subordinates of someone strong. Now, what would Tejasv do to survive? Maybe he will find a strong lord or gather strong subordinates. Will he become prey, hunter, or conqueror? Note: the cover art is not my creation, its credit belongs to its respective creator.

In a world of magic and dungeons. Archie Shellford thought he had woken up in a completely different world until he found a mysterious item containing ancient texts from his previous world. When his curiosity peaked, and all his questions weren’t answered, he met a fellow Outlander. Aided by the outlander's bizarre law—The Grimoire, Archie must live his new life and discover the relationship between this world and his old world.

He will not settle with just being the King of the System but he wanted more! He wanted to become the creator of it! And to start he needs to spend more to become richer, but what if spending millions has become the hardest task ever? This is the story of Henley Austen and his newfound money system. Transferring from one foster home to another, Henley Austen was a survivor of an abusive home. He barely got to school. At a young age, he learned to live on his own, toiled, and worked hard to have something to eat. And what's even crueler is that Henley lived in a world where people of status like him are greatly despised ever since the proclamation of the Red Tape Letter which segregates the rich and poor. Like the usual commoner, it has been Henley's dream to settle in the Elite City for being able to live there was like becoming a new person. If he'll become a resident there, his girlfriend will get back to him, he'll earn people's respect, and he won't be bullied anymore, but unless he became rich, he'll forever be stuck in the mud. He's not giving up, he'll fight hell to make his way to the top. But how? One day he woke up having 100 million dollars in his bank which he needed to spend in just 3 days! He found out that the more he spends the richer he become. It was like he found a golden goose hatching limitless wealth! It was fun! It was thrilling, but where will this newfound system take him?

Henry Austin was disregarded by society. He was left with nothing but his girlfriend when she cheated on him with his best friend. Heart broken by the situation he got into an accident only to wake up with a "Wealth System" He was given only one task, which was to spend a million dollars everyday otherwise the system would vanish. "Let's make everyone regret now!"

Zack's life is teetering on the edge, stuck in a relentless cycle of disappointment and setbacks. But a twist of fate plunges him into an extraordinary adventure and he unlocks his very own Zenith System -- his hidden weapon that can push him upwards into society, showing those who hurt and betrayed him that he is not just a normal convenience store worker. With each mission completed, Zack's power and ability rise. As he becomes more adept at using the system, Zack finds himself entangled in a web of alliances and adversaries. It turns out that he is NOT the only Zenith System user, and that the world he entered is not as alluring as he initially thought. With danger in every corner; the payment that the Zenith System demands; and managing his inner demons -- it is taking his all NOT to fall into the same dark abyss that the current users have found themselves in.

In a world where gambling dictates status, power, and survival, Peter Donovan—a seventeen-year-old delivery boy who despises gamblers—has spent his life avoiding risks. But when his ailing mother’s life hangs by a thread, Peter is left with no choice but to enter the high-stakes world he’s always loathed. Desperation forces his hand, and Peter bets everything—only to lose it all. Beaten, broken, and left for dead in a rain-soaked alley, Peter prepares to fade into the darkness. But as the last of his hope slips away, the impossible happens. A faint glow pierces through his pain—a semi-transparent interface appearing before his eyes. [System Initialization... Loading T.I.M.E Protocol] Welcome, Time Gambler. Welcome to the Gambling System] Now Peter can wager minutes, memories, even years of his life—to manipulate fate itself. But every second spent is a second he'll never get back. To save his mother, to defeat the gamblers who destroyed him, Peter must master the cruelest game of all: time. One wrong move, and his future disappears. One right one, and he might just rewrite destiny.