sin system: demonic harem after reincarnation

The war with the aliens was almost never ending, Human had done their best but that wasn't enough. "The prototype is ready" the head scientist said as he touched a remote control and a humanoid figure stepped in. The humanoid robot that the scientist built was exceptionally taller than a normal human, they were called Spartan. The Spartan which consists of four human not designed by the world greatest scientists, this was the next advancement in human technology but will it be enough for the aliens

After suffering from a tragic accident, Theo gets transmigrated into a new world of magic. He must now triumph over other geniuses and rise to the peak. . . . I retain copyright to the book cover

Aiden's lavish lifestyle came to an abrupt halt when his bank froze his accounts and seized his fortune, inherited from his late parents. With no choice but to return home for an extended stay, Aiden received a cryptic message and task from his father's attorney - spend a designated amount of money each week or month for a year or forfeit all rights as the sole heir to the fortune. But Aiden soon discovered that there was more to the challenge than just spending his money. Picking up a mysterious green credit card, Aiden was transported into an alternate world where magic and technology coexisted. Here, Aiden's spending habits would be put to the test, and the stakes were high. Aiden found himself navigating a treacherous thrifty system, where wise spending choices were paramount. He was forced to confront his extravagant and wild lifestyle head-on, and soon found that it was not as easy as he had initially thought. With his inheritance and future at risk, Aiden had to choose between the life he had always known or a newfound path filled with secrets, danger, and uncertainty. Join Aiden on a thrilling journey as he unravels the mysteries of his inheritance, learns the true value of money, and discovers a world beyond his wildest dreams.

After breaking up with his girlfriend, Eric Johnson married a beautiful female CEO to cover his father's $15,000 surgical bill.

“Alessia, what’s happening here? Were you just making out with your boss?” He asked, his eyes widening in shock. “What does it looks like? Of course I was having a nice time with him. Compared to you, he’ll pay for my bills, the ones you were unable to meet up with.” She hissed. *** A young delivery agent who just lost his job, was on his way home. Though there was nothing to be glad about, he was ready to bless the heavens just for keeping Alessia; his one and only love by his side. It’s such a pity for him that he got brutalized and insulted by the same person he thought had his back. Disappointment was written all over his face as he stepped his foot out of that office. [Host Pharrell, this is the SIMPLING system, you have received ten thousand dollars, to be spent in the next two hours] Pharrell Crowley is ready to get to the top!

Danzel Harrington was furious. His older sister, Helen, was discarded after being humiliated by Bash Merrick and his friends at the prom. She came home in a deep state of depression and closed herself off, only to tragically take her own life not long after when the photos of her being r*ped were spread on the internet. While the evening before, Helen had just received a letter of acceptance from her dream university with a scholarship program, and it all fell apart overnight! After that, he saw Lyra, his girlfriend, cheating on him with none other than Bash Merrick, the same man who r*ped his sister. When Danzel confronted them, he lost control and attacked Bash and his friends. As a result, he was sentenced to a 10-year prison term. His parents, who worked as gardeners and cleaners at Bash's house, were also fired from their jobs. The suffering didn't end there. Danzel had to endure the loss of his entire family due to the malicious deeds of the Merrick Family, the wealthiest and most influential people in his town. The relentless suffering drove Danzel to make a vow for revenge. With the assistance of The Ultimate Revenge System, he was determined to rise to power and become the most influential figure in Dustown.

What happens when you receive a system after a heart-break. Betrayed and humiliated by his girlfriend to a point of depression, Tristan's saw nothing good in himself, being called poor and charged of an obscene-related crime only made matters worse. However in his emotional state, Tristan could only hear a mechanical voice inside his head, alas! it was a system. [ You have received a role play system] ......."I have a technology that no one even knows exist!" .......

Dhaffa Arman unlike the others in his world was non-awakened. He didn't possess any slight power even after went thru an awakening test. Although he was disappointed in himself over it, he didn't give up and decided to be a teacher instead in the hunter academy. With his intelligence and ability as a teacher, he manages to produce all kinds of outstanding abilities users till his retirement.However, just when he went home and watched anime, he was poisoned by someone and fell unconscious, and when he woke up, he was no longer in the body that he used to know!!To think he becomes a character in the anime that he last watches!! and even awaken with this weird system??just what can he do to live here? and how can he go back to his world? Would his newly acquired power help him somehow?Just read to know.

Far away from Earth, a sovereign dies, risking his life to protect all of creation. On Earth, the heir of a very prominent family dies by the machinations of unknown enemies. Either due to coincidence or something supernatural, the Sovereign awakens in the body of the deceased heir. Stuck with the memories of his past life as well as the life of the new body's previous owner, this Sovereign vows to mete out punishment to those guilty. With the aid of his System granting him a variation of arsenals at his disposal, Sovereign Yen will climb to the top to reclaim his place at the top as well as find the source of his second chance, the one known as The Supreme One!

What would you do if your world collapsed and you had less than an hour to choose a suitable role that would allow you to survive? Would you give in to despair? Paul choose to fight for survival, now he has to face off against predatory animals, monsters, and even the land itself all modified by the Mana System. Eventually, he will have to face off against a foe even deadlier than the rest. Humans!