My Multisystem In Isekai

"Rule Number One: When the darkness falls, close your eyes. Hold your breath. Violators will be terminated." Kael wakes up in a rusted subway car with no memory of how he got there, surrounded by strangers and a mechanical voice announcing the rules of a lethal survival game. In this twisted dimension known as the Death Game, humans are nothing more than livestock, currency, and entertainment. Break a rule? You burn. Fail a timer? You are slaughtered. But Kael isn't helpless. Bound to the mysterious [Death Game System], he awakens a single, seemingly weak ability: 3-Second Precognition. He can't summon meteors. He doesn't have infinite wealth. But in a world where a single misstep means instant death, knowing the future just three seconds in advance is the ultimate cheat code. While others panic and beg for mercy, Kael remains an emotionless, calculating machine. He will exploit every loophole, sacrifice anyone who gets in his way, and brutally execute the monsters that hunt him. The system wants him to play by the rules. Kael is going to use the rules to tear the system apart.

Superpowers abound. Villains rule the world. A transmigrated dork that has absolutely no idea what’s going on. Strong-armed by the Superhero Enhancement System into the thankless job of endlessly performing good deeds in a world where such actions are often met with violence, Lucas Lynn doesn't have much choice in regards to using his supposed gifts. It’s bad enough having to pretend to be a supervillain, but how exactly does Boss System expect him to save the world with only the help of a homeless teen, a dog that’s smarter than he is, and a yoyo? Oh, just trick some supervillains into becoming superheroes instead? You make it sound so easy!

For three years, everyone treated him like a worthless live-in husband, even the woman he loved. What none of them knew was that the man they mocked had wealth beyond imagination and a past powerful enough to make billionaires bow. Now, one by one, those who looked down on him are about to discover who he really is.

Caelan Ashborne was once destined for greatness until his mother’s mysterious death erased his name, his future, and his place among the elites. Forced to live under a false identity, he endured humiliation in silence, believing love and family were his final refuge. Then his daughter was diagnosed with a terminal illness. Before Caelan could fight for her life, his wife betrayed him. She demanded a divorce, publicly abandoned him, and returned to the powerful man she had always loved , declaring Caelan and his dying child a burden no longer worth carrying. Cut off from medical access, mocked by society, and crushed by a world ruled by power and privilege, Caelan reaches the edge of despair. That is when the system awakens. Cold , Ruthless and deadly. It does not save the innocent, it rewards the decisive. To protect his daughter, Caelan must rise through blood, judgment, and sacrifice… and become something the world never intended him to be. The system chose him. Now the world will pay.

Reduced to poverty after being betrayed by his best friend and fiancée, Barra's fate turns around when he accidentally acquires the "Conqueror Monopoly System." This mysterious system grants him the power to seize his enemies' assets, provided he completes its missions, which include recruiting highly attractive and sexy women as tenants for his rundown boarding house. They range from a conglomerate heiress and a seductive mafia fugitive, to a college student and the wife of a prominent politician. Barra not only monopolizes the wealth of Neva City, but also subdues the arrogance of these high-status women under his roof. The dice have been rolled, and the time for revenge has come!

Reno thought breaking up with Clara was the end of a messy chapter, but he didn't realize he was dealing with a woman who doesn't take no for an answer. Now a self-proclaimed Goddess of a multi-billion dollar cult, Clara has reclaimed Reno to sit on a golden throne by her side. From vulnerable masculinity seminars to dodging Vatican investigators and surviving rival secret societies, Reno is thrust into a world of fanatical devotion and high-stakes corporate warfare. With his own mother on Clara's payroll and a High Priestess plotting his downfall, Reno must decide, will he keep running from the woman who literally bought his neighborhood, or will he embrace his role as King and manage the beautiful madness of the woman who refuses to let him go?

They killed my family. Stole my empire. Forced me to marry their daughter as a "peace offering." For three years, I played the worthless son-in-law; beaten, humiliated, spat on by my wife's family. They called me a coward who abandoned the Chens during the massacre. They don't know the truth: I was drugged, framed, and left to rot. On the night my wife signed our divorce papers, her brother left me bleeding in an alley to die. That's when IT awakened; the Ancestral Blood System, a Chen family legacy that activates only when the heir loses everything. But this system doesn't give free power. It demands SACRIFICE. Want money? Trade your memories. Want strength? Endure torture that breaks your soul. Want revenge? Lose the ability to feel joy. Every victory costs a piece of my humanity. Every choice drags me closer to becoming a monster. The five families who butchered my bloodline think I'm still that pathetic son-in-law. They're about to learn what happens when a caged lion breaks free. My mother-in-law mocked me? I'll buy her company and make her beg. My wife's new fiancé tried to kill me? He's the mastermind behind my family's murder and he has a system too. The world thinks the Chen Empire is dead? Watch me build something even gods will fear. But here's the problem: The more I use this power, the more it corrupts my soul. At 100% corruption, the system consumes me and unleashes an ancient demon that will end the world.

Stephen cared for Elena, lavishing her with all his love and care and she repays him by cheating on him and trembling on his emotions without pity. She calls him worthless, below her league and she has gone for a realm man. And at the heights of his emotions, the truth is revealed, Stephen isn't the worthless nobody they thought him to be, his true identity stretches way beyond what they could even fathom.

"You're nothing but a useless loser," Caroline sneered. "Without me, you'd be sleeping on the streets." For three years, Darius endured humiliation as a house husband. He cooked, cleaned, and loved his wife with everything he had. In return, she cheated on him with a wealthy businessman and treated him like dirt. The night Darius discovers the truth, he finally stops pretending. "We're getting divorced." Caroline laughs mockingly. "You have no money, no power, and no future. You'll come crawling back." What she doesn't know is that Darius is the long-lost heir to one of the richest families on Earth—an octomillionaire empire that controls corporations, banks, and powerful figures across the globe. Within days, CEOs bow before him. Billion-dollar contracts land at his feet. Even feared underworld bosses tremble when they hear his name. Meanwhile, Caroline watches her company collapse after losing the one man she never should have betrayed. When the truth is finally revealed, she can only stare in shock. "You... you're the Octomillionaire Heir?" Darius smiles coldly. "Now you know exactly what you threw away." A betrayed husband. A hidden heir. A ruthless rise to power. This time, regret will be her punishment.

Max Carter has always been seen as weak, married into a wealthy family, endures mistreatment and his rich wife Emma’s coldness. While she resents their marriage, he has fallen deeply for her, enduring the family’s disdain, She never loved him, and her family made sure he knew he was an outsider. Yet Max couldn’t help falling deeply for her, doting on her despite her coldness and enduring the scorn of those around him. But everything changes when he uncovers his true identity. “I’m not the man you think I am, Emma. One day, you’ll regret underestimating me, ”