Sin System: Demonic Harem After Reincarnation

Liam Walker, the infamous lived-in son-in-law of the Henson family had been cheated on by his wife. Instead of feeling sorry of her action, his wife blamed him for being useless instead and divorced him. Homeless and with nowhere to go, Liam was in a tough position until a system bonded itself with him. [Income Multiplier System has been successfully installed! Any income you earned shall be multiplied! Become the most wealthy businessman in the world!] [You have successfully sold a Lamborghini sports car! Income multiplied by 100!] Watch Liam Walker walks his path to become the first quadrillionaire and take revenge on those that had wronged him!

He doesn’t know his bloodline. But his shadow remembers. Born with a giant wolf-shaped shadow that moves on its own, and a pendant from the parents he never knew. Kai Draven got caught up in a dorm for supernatural misfits. Welcome to Vespera High Academy, a school divided by factions, ruled by strength, and ranked by blood and fist. Here, students don’t just study......they duel to survive. And Kai? He’s at the bottom. No powers. Just a reputation his shadow made before he could even open his eyes. But when defeat cracks the locket, something happened. [SYSTEM ACTIVATED…] [LUPIN CODEX UPLOADING......] Something is about to happen in Vespera High Academy........

In a world where cultivation is the path to purity and power, Kael, a low-ranking sect disciple who was always underestimated, finds himself on the brink of death after being brutally betrayed by his own sect. As his soul wavers, a mysterious system awakens in his mind: [Sin Cultivation System Activated]. This forbidden system offers Kael the power of the seven deadly sins—taboo energy that even demons fear. To activate and strengthen each sin, Kael must forge deep bonds with powerful women, where each woman represents the essence of a single sin, transforming him from a victim into the hunter. As Kael gathers this forbidden power, takes revenge on his betrayers, and builds his strength, he inevitably draws the attention of the Orthodox Immortals, the guardians of purity who view his cultivation as the most heinous heresy. Kael must navigate a world that sees him as an existential threat, mastering the powers of his sins—from Lust which enhances vital energy, Wrath which boosts combat prowess, to Greed which multiplies resources and Envy which mimics an opponent's techniques—all while building an unconventional circle of allies from the powerful women bound to him. However, Kael's path carries a terrifying destiny. Ancient legends foretell that if all seven sins are united within a single vessel, they will awaken the Sovereign of Sin, a primordial being capable of devouring the energy of gods and collapsing the universe. Kael soon realizes that he may be the destined vessel for this ancient entity, and every step toward mastering his sins brings him closer to the Sovereign's awakening.

Gray Adams grew up with nothing but long shifts and calloused hands. After losing his last job and facing eviction, he thought his life was over. Then, on a rain-soaked night, a voice echoed in his mind: [Welcome to the Great Fortune System.] That single message changed everything. The System offered missions tied to money, ambition, and discipline—rewarding him for smart investments, confidence, and courage. As Gray climbed from broke laborer to rising entrepreneur, he discovered that real power demanded more than wealth. When success tempts corruption and rivals try to destroy him, Gray must choose between becoming another ruthless billionaire or staying true to himself

Adrian Cole was nothing, a pale bookworm at the bottom of the food chain. Until the day the Likability System awakened, his life took a shocking turn. Every task completed raises his charm, wit, and power… and every failure digs his grave deeper. Every sneer. Every slap. Every rejection. He’ll pay them back tenfold. Now, every classroom becomes an arena. Every hallway, a battlefield. And every bully? A stepping stone to his rise. From ridicule to respect, from trash to king, Adrian will flip humiliation into dominance, face-slapping his way to the top.

I never thought betrayal would hit me this hard. I caught my girlfriend cheating on me with the most popular guy on campus. I stood there, frozen, watching as she laughed in his arms—like I never even existed. And when I confronted them, I was the one who got blamed. Me. Because I was poor. Because I had no influence. She didn’t even try to defend me. And when I was at my lowest, when I thought I was about to die, something impossible happened. A screen appeared in front of me, glowing with strange letters. [Spend one million dollars within three days to unlock a greater prize.] It was a system—one that could give me unlimited wealth, but only if I played by its rules. With this, I could have anything. I could crush the ones who humiliated me. I could make them pay. But I quickly realized that money alone wouldn’t be enough. The man I was up against wasn’t just some rich playboy—he was dangerous, and he wasn’t going down easily. If I wanted to win, I had to be smarter. I had to use every trick, every advantage, and push the system to its limits. The question is—do I have what it takes?

Jake’s blind date turns out to be a 250-pound walking machine, Delma Hamilton, who’s also the CEO of a weapon manufacturing company worth in trillions! And she falls in love with Jake at first sight! When Jake's family members arrange his wedding with Delma, he runs away. But Delma doesn't give up on him and advertises his missing posters everywhere! How will Jake survive the loving disaster of a woman who wants him at all cost? Witness Jake’s supremely humorous yet hard-hitting journey yourself!

Ezra Echelon, lost his family and the entire Echelon sect to the treachery of his former master. Reduced to a shadow of himself and branded as a living trash by the tyrannical Serpent Fang Sect that took over the Echelon sect. Ezra lived a life of torment. But in the darkness of this despair, a mysterious voice awakens a power inside him: the Echelon System. It promised him vengeance and transcendence, pushing Ezra onto a brutal path of strength and self-discovery. Armed with ancestral combat techniques, driven by the fire of revenge, he begins his journey to dismantle the oppressive sects ruling his world. Along with Mira, his trusted student, and Halak, the unlikely ally, Ezra must build a rebellion against a world steeped in corruption. He promises to avenge his sect and also set the world back on a right path of truth and justice

In a world where power and ranks decide fate, Henry is nothing. An F1 scraping by in the slums of Neo-Veridia, his life is a cycle of struggle and survival. But everything changes in an instant. A catastrophic accident. A moment of darkness. And then—he awakens. A System unlike any other. No fixed path. No limits. Infinite potential. Now, the city's elite watch him with fear. Ruthless factions move in the shadows. Something ancient stirs beneath the surface. And Henry? He’s done playing by their rules. The hierarchy was unbreakable—until now. Power has been rewritten. And Henry is just getting started. Will Henry rise out of the ordinary and actually break the hierarchy from the system? Will he make space for something new?

If you win a girl's trust, you earn money. But if that trust is broken... the penalty is harsh like being turned into a girl for 7 days. Li Chan, an orphan, had been with his girlfriend, Liya, for seven years. She was his only light in a dark world until she betrayed him for the young master of the powerful *Song Hao Group*. Heartbroken and shattered, Li Chan had lost all hope in life... That's when a mysterious voice echoed in his mind “Activating: The Supreme Girlfriend Making System.” The rules were simple, yet brutal: * Earn money by gaining a girl's trust. * At 100% trust, unlock unique and powerful special skills. * But beware if the trust drops even slightly... suffer strange and humiliating penalties. Now, armed with this bizarre system and a heart craving redemption Li Chan sets out on a new path. To build trust. To gain power. To master love and betrayal. His new goal? To rise above them all and become the Supreme Harem God. *Let the twisted game of hearts begin.*