sin system: demonic harem after reincarnation

Being betrayed and humiliated by his girlfriend right in front of hundreds of students, Norman had to accept the fact of being the most embarrassing man at Dorhaven University. They laughed at him, insulted him, and looked down on him. And, as Norman fell into indescribable rage and despair, a blue hologram that gave great hope emerged from his vision. [Congratulations, Host. You are currently connected to the Destiny Changer System! Your terrible fate will soon turn wonderful!] Can Norman really change his destiny with this? Will Norman be able to take revenge for all the insults they have given him? I own the copyright to the cover.

His mother abandoned him because he was a burden. His girlfriend dumped them because he was worthless. The entire world laughed, pointing their fingers at him. "A failure!" "Simp!" "He should just die!" "His life is worthless!" There is nothing left for him in this world. No friends. No fortunes. No future. But then... "Host detected. Chosen heir system activating..." He becomes the chosen one, the power of life, death and riches all in his command. Those who laughed shall weep for mercy. The ones who pointed their fingers shall beg to have it cut off. The entire world will pay as Adrian Blood seeks his revenge!

"You lousy guy! What exactly can you do in this world, huh? You can't even do this!" The restaurant owner's anger grew when Sean Hodgson accidentally spilled an order that was about to be delivered to a customer. Sean could only bow his head deeply with great guilt. This was the thousandth time Sean had been fired from his job. He was known as a loser man. Because he was an orphan, poor, stupid and weak. Everyone scorned him including the woman he loved the most, Sarah. Sean was almost desperate because of the injustice in his life. However, suddenly an Overpower system appeared that offered Sean to become a real strong person. The curious Sean immediately chose the yes button. Until finally a world situation was reversed. Where the attack of the Giant Ant named Megant Monster who wants to destroy human life. Can only be defeated by Sean. Can Sean carry out his mission? And what is the relationship between the Overpower system and Sean's parents?

He is a poor man who married a girl of rich descent. Because getting a mysterious message makes Dason a rich man. And finally, no one can fight it.

Allen lost his job after being wrongly accused and his sister was being adopted by a loan shark who he had loaned money from and wasn't able to pay back. He is left to go beg the people who had abandoned him but got humiliated. His mother died too, taking away the hope he had. He felt lost and wanted the world to end. He was given a sunglass by an old woman which he hesitantly collected. Wearing the sunglasses, he discovered it was an advanced system that would bring riches to him. Now, he would get back to everyone who made his life miserable. But, there was a limit to the sunglass power of which he wasn't aware.

For years, Damien Stark endured the relentless torment of bullying, a life defined by isolation and despair. But one morning, everything changed. As the sun rose, Damien awoke to a world consumed by chaos and devastation. The apocalypse had arrived, bringing with it a merciless system that forever altered the rules of survival. To Damien's astonishment, he discovered that he possessed a System, as well as a unique Gift that will allow him to survive in this new world. In this shattered world, he plans to do all he can to survive and rise to the top. Driven by a newfound determination, Damien embarks on a perilous journey through the remnants of civilization. Along the way, he encounters treacherous landscapes, formidable adversaries, and the haunting echoes of his painful past. Guided by his indomitable spirit, he must navigate a world teeming with peril, where every decision could mean the difference between life and death.

Herson wants to leave his parents' house, because they are harassing him to get a serious girlfriend. He moves into a penthouse with his gaming partner Panther, but she is a gamer being hunted by a network and what started as a simple game turns into a deadly nightmare for Herson... At first Herson falls into a deadly trap of the head of an international gaming network, but then he becomes THE KING OF THE GOLD SYSTEM GAMING, British billionaire and resident joker of The Gold System Gamertag, dethroning Maker Covington in an interesting game, where the smartest survive.

At his fiance’s birthday party, Victor Leighton comes with the lowest gift. He gets mocked and humiliated by everybody, even his fiancé, Maria Siesta, who cut off their relationship and then chooses Victor’s older brother who’s more successful and is the heir of Leighton Family, Verlaine Leighton. Bad luck doesn’t stop coming. Victor also chased by debt collectors who are come to collect Victor’s mother's debts who was love to gambling. Victor is underestimated even by his own family. He is the youngest child of Leighton and is also called the most useless one. Everybody always looks at his siblings, even his father never look at him and abandoned him. When he almost dies after being beaten by debt collectors, Victor swears he will be a successful man more than his siblings. But a system window appear before him and said that Victor is the master of the Unlimited Dollar System; a system that can make Victor get whatever he wants in the blink of an eye by using his unlimited money. He’s already at the top of the top, now what will he do? Get everything he wants or … revenge?

Chandler Logan, a skilled employee at New Leaf Corporation in Nebula, is unexpectedly fired after being implicated in a scandal involving his wife, Jannica. As he works to clear his name, Chandler discovers a hidden RPG-like system embedded in his reality where his choices are affecting his stats like Reputation, Charisma, and Moral Points. Determined to keep his life together, Chandler decides to take advantage of the system. As he progresses, gaining new skills and getting trusting allies, he will start looking to the truth behind his demise and the conspiracies that led to his downfall. Armed with his newfound abilities, Chandler is now determined to destroy and exact revenge on those who betrayed him. But as he uncovers hidden alliances and face more dangerous enemies, he should create a balance between his growing power and the risk of losing himself.

It sucks being a shut-in Neet. You play video games all day long, you have no real friends, you gained horrible weight and you're a hopeless virgin. Sooner before you know it, life gets really boring and lonely. Such was the life of Arthur. In his mid thirties, he realised his life lacked meaning. He was bored and wanted something new. That night he shut his eyes to sleep and never woke up. When he woke up, he found himself in a different world. In this world, there are no gods nor heroes. The demon King ruled the world with an iron fist. Without gods the world wouldn't function. Arthur gained the rarest system of all time—The godleveling system. His only goal is to level up to become a god but the demon King knows something that Arthur doesn't know.......