Sin System: Demonic Harem After Reincarnation

I am Kava, an ordinary person as usual. I'm not the chosen person by the system. One day, I got a lot of money. I went to a cafe to celebrate with my sister, Mika. It was then that we came under attack from a chosen system user. I lost the fight and my sister was taken away. I found a Florine system bracelet and I put it on. However, that's not a combat type system and I wasn't chosen. Even the system guide insulted me. What do I have to do to be able to use the system?

Alex lost his parents due to the ongoing war between humanity and the demon halflings. In this era, human possess abilities but the powerful abilities are hoarded by the rich and powerful while the poor and weak are left with scrap! When Alex awakens a system, will he be able to save the world?

Felix was one of the best elite special ops soldier in the world and now he is reincarnated as a bookkeeper with a trash ability in a Esper filled world which thrives on the rule of the strong prey on the weak, when he is give a nameless book by a mysterious stranger, he gains a system and finds out that his supposed trash ability is actually a powerful ability above the SSS rank so now he is determined to find out the truth about the parents he never knew and on the way he meets powerful people and the mysterious stranger who introduces him to a whole new world of adventure and danger.

When a sudden supernatural storm wreaks havoc on Griffin City and releases mysterious monsters from portals, Mason risks his life while trying to save his foster brother, and fails, but is beaten to death by a bully. At the brink of death, he awakens a system through an old necklace given to him by his father before he and Mason’s mother were killed by a shadowed figure during the first occurrence of the same storm that dawned on their city ten years ago. The system grants Mason the power to respawn after death infinitely, yet his power is mocked as a useless one by those who also awakened superpowers during the storm. However, there's more to his powers than he even knows. With the system, his abilities are limitless. He decides to groom his powers when he sees his potential and fights against the monsters that appeared from the portals. In the long run, as he unravels his powers, he becomes a prize for envious power hungry supernatural beings he never knew existed and decides to hide behind an alter ego known as “Devil's Spawn”. He joins the secret Protectors’ Guild to protect innocent citizens when he realizes that his foster family have no way to protect themselves. Things take a turn when his foster sister goes missing. He goes in search for her and crosses paths with the shadowed figure that killed his parents again. His memories are triggered and he's hellbent on knowing who the shadowed figure was. Revenge becomes his game. However, he soon realizes that there's more to the supernatural storm than it meets the eye. Will Mason choose revenge or to save the world from the hidden dangers lurking behind the portals?

Hudson Atonal is a college student who worked as a simple bartender who was constantly bullied by his course mates. When he died, he was reborn in a magical world as a slave and was about to be killed. However, he unlocked the Dual empire building system, which allowed him to travel between his modern world and the magical world. With this power, he vows to become a legend and make money while taking revenge on the bullies that killed him. Join Hudson on his journey as he goes on difficult missions to upgrade his powers and become the ultimate dual empire builder.

Betrayed by his own girlfriend, then framed and eventually hit by a car. He fell into a coma for ten days. Right when he woke up, Ryu Bastian found something floating before his eyes. He thought it was a hallucination until finally several real rewards were given, making him realize that the System was not mere illusion. With the system, he slowly rose. Avenging the humiliation and dominating the world.

After the death of his parent. Max became half crippled and he had to with the help of a staff. He went to live with his grandparents. He was lucky enough to be among the few who got admission into Prospera Academy on Scholarship. It was a school meant for the rich but that was when his problem started. He was bullied by Zaco, one of the Elites in the school. Zaco's father had given out scholarships to many other students and Max was also a benefit of it. He met with Flora who was the most prettiest girl on campus who decided to date Max because he was brilliant. little did Max know she was sleeping with Zaco. when Max found out, he confronted Zaco and they engaged in a fight. Zaco pushed him off the cliff off the school and he landed on the floor dead. As the heavy rain poured into his eyes and thunder crackles, Max saw a system In front of him telling him to be a grim reaper for a powerful system. The system was ready to bestow him wealth only if he could follow the laid down ruless

Meet Leo White, a hardworking young man drowning in debt. When he crosses paths with his new boss, life takes a nightmarish turn. Leo's job becomes a prison, and he can't quit because his boss holds his future hostage. Leo clings on to his girlfriend's love, but her shocking betrayal shatters his world. Which is the system descends taking everyone to the new world. Leo becomes the first to sync with the system and gets a title. [Apocalypse Baby] With it, he rises from underdog to unstoppable in an epic urban fantasy world. A world where power is everything, and vengeance is his driving force.

Lucian Storm knew there was a void in his past. At just five years old, he found himself swimming to shore, unaware of his own identity. He was found and saved by a mafia lord who was interested in him after seeing that the boy was stronger than an average human. Not just that, his irises… they were gold. Raised as a skilled gangster, he grew into a wealthy and handsome man. However, his downfall came when he fell for a woman. He could have died, but his Golden Eye System activated, revealing to him the secrets that lie on Earth and giving him the power to fight his enemies— the demons living among humans. In the process, he also uncovered the truth about his past.

After working hard to provide for his wife, Felix was not only dissatisfied but also betrayed! His wife ran away and he had an accident while trying to chase her. As a result, he was rushed to the hospital. But when he wakes up, he finds an unfamiliar voice with a transparent screen greeting him. The EasySync system has found an owner! Felix's life changed drastically. A new journey of doing various missions to become rich now begins!