The Demon Monarch System

David Lidell vomited blood and passed out when he was enraged by his rival in love. When he woke up, he realized he had obtained a super lavish system, and it was asking him to spend a quadrillion dollars. After that, David embarked on the journey toward the pinnacle of his life. David, “I’m not going to pretend anymore. For your information, I am a quadrillionaire…”

"System, I request to leave the mission world." The summoned system quickly appeared. "Ms. Young, your request has been approved. You have half a month to say goodbye to your family in this world." With that said, the system disappeared again. Andrea Young paused for a long time at the mention of the word "Family" before slowly looking toward the family photo on the table beside her. In the photo, her husband and son were each lovingly kissing her cheeks. The happiness captured in that moment suddenly left her stunned. No one knew Andrea was on a mission. Ten years ago, the system brought her into this world to win the heart of Gabriel Fulton, the crown prince of Capital City. They went from attending school together to the wedding altar over the past decade. She not only completed her mission, but also fell in love with the target of her mission.

Avalon Taylor is the daughter of one of the most decorated hunters that graduated from the Hunters Academy in over a century. She hopes to be able to live up to her fathers legacy, but when she turns 18, and graduates herself, her life is turned upside down. She is thrown into a world of demons, and her destiny becomes entwined with another. The Prince of Darkness, Lucas Caine. A demon not to be trifled with. Will she be able to unravel the secrets of her parents past, or will her destiny lead her down a path which there is no coming back from. Follow Avalon and Lucas on their journey in the underworld...

On a certain day, a meteorite fell from the sky and formed a terrifying radiation, causing drastic changes to Earth. Countless regions experienced mysterious phenomena and soon, all the creatures on Earth, plants and animals alike, mutated into dreadful "monsters". Humans were not an exception; those who were lucky enough awakened to supernatural powers and gained extraordinary strength. 　　In order to resist the threat of mutant creatures and extraterrestrial life on the earth, the supernaturalists formed the Superhuman Academy and Ryan Smith was one of the lucky ones. Unfortunately, he died in a war of alien invasion. 　　Surprisingly, Ryan was reborn, reborn ten years ago, just at the moment when he entered the Superhuman Academy. The difference was that he had a mysterious investment system, as long as he invested in people and things crazily, he would get back more powerful power! 　　And his first investment object was his Boyhood Sweethearts, Vina Anderson, the sexy woman who wanted to take away his mysterious treasures. How will Ryan choose?

My younger sister and I unlocked our systems on the same day? The setting? The nation decades ago. She went for the learning system and married an intellectual. I had no choice but to go with the useless storage space system. Then, I was forced to marry a thug. A very rude and crass one at that. Thanks to the storage space system, I got through a famine and became the village's richest person. My sister's learning system was useless, and she almost died of starvation. Driven by jealousy, my sister seduced my husband and slept with him. To get my wealth, they came up with a plan and pushed me down a cliff. When I came to, I realized we'd returned to the day we awakened our systems. My sister shoved me away and picked the useless storage space system. "Move, you bitch! Now I have your system! I'll survive the famine and get rich! You'll live in my shadow forever, as you should!" She was so smug. She was gloating. I took the learning system and smiled to myself. Unbeknownst to my sister, I got rich during the famine, not because of the system, and my dream was to score high on the exam and get into a good college. My sister managed to mess up her life even when she had the better system. Now she took the useless one. I could practically see the misery waving at her down the path.

To cure our daughter's pancreatic cancer, I made a deal with the System, trading the rest of my life for a miracle drug. My husband called me insane to my face, but secretly gave the medicine to his mistress to treat her facial scar. When I was falling apart in despair, he had the audacity to explain: "Vicky has dreams of becoming a star. She's already 24, she can't wait any longer. "Besides, didn't you get that drug by sleeping around? How could a housewife like you possibly get such high-end medicine on your own? If you want to save our daughter, why don't you go whore yourself out again? It's not like it'll kill you, right?" But the truth is, I really don't have another life to trade for another dose.

Teivel is a small town where nothing ever happens. But all of that changes when the Panic Room sets up shop. A place where all your nightmares come to life and your sins are awakened. Lilith is no exception to the temptations that lurk in the dark. But when she encounters the seven deadly sins and finds herself drawn to them, she finds herself willing to do anything to please them. But how far is she willing to go? Who will she destroy to get another taste of the Demons who have branded themselves on her heart? In a world not for the faint of heart, only the strong survive. But is Lilith strong enough to resist the evil within, or will her soul become as black as theirs?

Jacke, an archdemon and crime boss, is loyal to his family and seemingly no one else. Alexandria is the Alpha to the Wolves of La Muerte, and one of the only female Alphas known in the world of werewolves. Fate pairs these two in a way that would seem to be their undoing, with Jacke being cynical and mistrusting towards Alex's claims that he is her mate, and Alex being determined to no end other than having Jacke by her side. Will Jacke bring down his walls to let Alex in, and trust that she won't betray his faith or fall short and leave both of them in shambles?

Selene is an orphan raised by her aunt. On 16th birthday, she learns that is a witch, in addition "the chosen one", who is born once in 1000 years. If Selene survives to her 18th birthday, she will be powerful enough to kill the demon king, Alistair. Will she succeed? Damon is one of the strongest demons. He is given a task from Alistair to kill Selene before her 18th birthday. Will he manage to do it? They both come from different worlds which share one law - to not get involved with each other. But what will happen when Selene and Damon fall in love? And which side will win this battle in the eternal struggle between Light and Darkness?

Armand was appointed king, his small hellish kingdom was nothing compared to his nemesis. But he was not claiming for more, he was done after his lover's demise as King Ranulf accidentally kill her and made both of them cast to hell. He's a fallen angel who wanted nothing but to spend the rest of his eternal life grieving in his way. That was until the day he met Rain, the human werewolf he thought can heal his wound. But he was rejected, he thought Rain liked him until he chose King Ranulf. The day he was going to kidnap Rain was the day he got badly wounded. And Rain once again rejected him and told his lover not to hurt him. And that's how for days he ended up in the care of a very chatty Succubus named Basilea. ***** No one knows how valuable Basilea was, not even the last king she served her life for. Basilea was the last princess of the demon succubus, both parents were killed in the great war less than a hundred years ago. Her kingdom falls and she had no desire to fill her royal throne. She was living the harem life with King Ranulf, her life was easy under his protection. Basilea was brought by King Eustace, the ruler before King Arkael and King Ranulf. She was taken in just before her she reach adulthood, no one knew her, and no one gets close enough to peel layers of her deep darkest secret until Armand. The one being she couldn't resist, the one male who can fulfill her desire. She was a demon after all, and she knows that demons don't get her happy ever after. Or do they? ***** Warning! R-Rated for 18+ due to strong, explicit language and sexual content*