Sin System: Demonic Harem After Reincarnation

A hundred and sixty years after the dragon bloods attacked the earth and a mysterious stone shattered, granting humans abilities, Mason Blackwood is one of the few to not have awakened abilities. But after a night of being chased by neo-thieves and falling off a cliff, Mason unlocks the demon system, allowing him to grow strong as he unlocks more skills. And through the system, he discovers that a second war is coming. A war between the humans and dragon bloods and one that might perhaps wipe out the entire human race. And this time around, he might be the only one who can stop it.

In this world where monsters and magic exist, there are all sorts of things inexplicable with science. Lee Woo was a famous scientist in his old world until he got sent to a monster world where science doesn't exist so he will make it exist.

The sky split apart. A mysterious System descended. The world turned into hell. Mutant zombies, ancient monsters, and tyrant Lords hunt the remaining humans. Civilization collapses, hunger spreads everywhere, and hope is nearly extinct. Yet in the middle of the apocalypse, one man rises. Axel. While others struggle merely to survive, Axel awakens a forbidden talent: [1000x Critical Chance]. One tree cut down… becomes a forest. One monster slain… becomes a mountain of resources. One fortress built… becomes an impregnable city. The ruined world becomes the foundation of his empire. Together with Abby, a strategic genius with a heart as cold as steel, Axel begins building something greater than a mere shelter. An Absolute Fortress. An empire rising from the ashes of the apocalypse. The tyrant Lords will fall. Monsters from other worlds will be harvested. Even the Ruler of the System will be challenged. Because in this chaotic world, only one law remains: Everything Axel touches… becomes 1000 times deadlier. And this time, he doesn't just want to survive. He wants to rule the world.

Zevian Rook had three things going for him: a scholarship to an elite university, $173 in his bank account, and absolutely no ambition to impress anyone. Then a System appeared. [Daily Check-In System successfully activated.] "Cliche." [...] "Can I fly?" [No.] "Heat vision?" [No.] "Then what's the point?" Apparently offended by its own uselessness, the System forcibly upgraded itself. [HEAVEN DEFYING SYSTEM activated!] Its first legendary reward? A nut. Zevian ate it. He probably should have read the description first. The next morning, his glasses stopped working, his body looked like it had been sculpted by an overenthusiastic god, and his supposedly ordinary university life went straight to hell. Rich heirs want to humiliate him. Campus beauties keep approaching him. A gorgeous senior secretly has thirty days to make him fall in love and break his heart. Unfortunately for her, Zevian is more interested in the free meals. And while everyone mistakes his indifference for cowardice, nobody realizes that beneath Zevian's easygoing smile is a man who simply doesn't care about money, status, reputation... or giving arrogant people the reaction they want. Cars? Nice. Mansions? Convenient. Beautiful women? He has eyes. Insult him? Go ahead. Touch someone he cares about? That's when Zevian stops smiling. From a broke scholarship student to a despised son-in-law, from a supposedly useless orphan to the hidden heir of a terrifying family, Zevian will slowly discover that wealth is only the surface of his world. Beyond it lies martial arts, hidden powers, forgotten bloodlines... and the truth behind a System arrogant enough to call itself Heaven Defying. Zevian only has one question. "Can I fly yet?" [NO!]

When fate and vengeance intertwine in the lineage of the God Artemis, the world will undoubtedly shift dramatically towards destruction in retaliation from Arte Balder, a handsome man with an extraordinary combat instinct. He battles an evil conspiracy involving gods steering the world toward utter devastation. A figure set to embark on adventures, traversing cities, kingdoms, empires, and continents, all the way to the celestial throne. Arte and his army face horrifying monsters, malevolent troops, and tyrannical gods. Gathering high-tier magical treasures, all to prepare for Ragnarok, the battle of humans against gods. However, Arte also grapples with an internal conflict: choosing between slaying or forgiving his power-hungry adoptive parents, granted powers by one of the gods. This will be one of his most complex and heart-wrenching decisions. In an adventure filled with action, political intrigue, and inter-racial tensions, Arte leads the resistance against his predestined path. Can he sacrifice everything for the balance of the world? Brace yourself to be immersed in a magical world filled with power and revenge in the Eternal Insect System.

Meet Maximus Prime, the once abandoned, betrayed, and humiliated by his girlfriend and family. On the verge of giving up and accepting a crime he knows nothing about, Maximus was gifted with a Tycoon system. Maximus became superrich with the system and his Cybersecurity skills got to the highest level. Whenever Maximus upheld justice, he was rewarded bountifully by the system. A sneer rested on Maximus' lips: "It's time to play some dirty game." Maximus smirked, looking serious. His family, down to his ex-girlfriend and best friend, Maximus was ready to face them again. Including the hidden enemies that want him dead. Maximus was coming for them!

[Host Detected; Do you want to become the most powerful person in the universe? Unlock special abilities and gain immortality. Yes or No?] After being betrayed and left for dead by the wife he loved and the family he trusted, Xaden activated the Supreme System. He never knew that the ring his grandfather gave to him before dying possessed such a power. Now he has a chance to become the Trillion Dollar Consortium heir and the Supreme Manna Mage. With enemies to fight in the physical dimension and a war brewing in the alternate universe, will he succeed?

What will you do when you discover that the world is bigger and more dangerous than you can imagine ? Michael, a young man who discovers that his girlfriend is cheating on him with a Rich young man named Louis. But the next day, a message appears in front of his retina [The Heavenly Werewolf System has been successfully paired with host Michael Edzmon.] [The host can call the system interface by thinking] The emergence of the system was a major turning point in his life, as he embarked on the path of revenge for his girlfriend's betrayal, only to find himself involved against enemies he thought were only in novels, werewolves, vampires, ghouls, witches, he finds himself against these terrifying creatures, but with the help of the system , Michael becomes strong enough to face these threats. ( i own the cover copy right)

After his death, Mal was given the opportunity by Dewa Lorda, the god who guards the boundaries of the world of life and the world of death, to be able to return to his body in the real world. However, Mal needs to travel through time to come to the future of the world of Amapherald, a life other than human life, where he is destined to be one of the six The Seekers. In his new life, Mal only has 400 days to complete all missions and reach the top level. The mall is equipped with a system controlled by Meiden, Lorda's right hand man. Unfortunately Mal's plan didn't go that easy smoothly. He had barely passed 400 days to reach the top level and was in danger of not being able to return to his body. [SYSTEM HAS BEEN ACTIVATED] [WELCOME TO THE WORLD OF AMAPHERALD, MAL. HERE, SYSTEM GUIDE WILL GUIDE YOU THROUGH IMPORTANT MISSIONS] [THIS IS THE REAL FIGHT THAT WILL BRING YOU TO ENJOY DIFFERENT SENSATIONS] [YOU WILL BECOME ONE OF SIX SEEKERS OF PURE STONES AND SAVE THE WORLD OF AMAPHERALD] [Name of The Seeker: Mal Ricky Riordhinee] [Position: As a Guardian]

Betrayed and slowly poisoned by his wife and best friend, Seth dies in agony only to wake up ten years in the past. With the help of the 'Omniscient Revenge System,' he discovers that his suffering can be traded for the darkest secrets of his enemies. As Seth dismantles the lives of those who killed him, he uncovers a hidden heritage that places him at the center of a global conspiracy.