My Multisystem In Isekai

The World is failing. Everyone fears another beast apocalypse. John suffers a heart break from his girlfriend all because he is a victim to this broken world order. But mysteriously, he gets a notification. he is now a trillionaire. What's the catch? He needs to spend wildly and hookup with beauties to proof his worthiness.

"Sign the divorce papers and crawl back to the gutter, vermin." For two years, Ren was known as the disposable, weak son-in-law of the ruthless Rossi Mafia family. They mocked him, calling him a coward who hid behind their empire. They didn't know the marriage was a calculated blind spot. It was a high-security sanctuary Ren chose perfectly to hide in while his cybernetic Death-Prediction System underwent a mandatory two-year dormancy. On the night his mafia queen of a wife coldly hands him the divorce papers to secure a syndicate merger, the countdown reaches zero. [System Update 100% Complete. Death-Prediction Matrix: ONLINE.] The leash is snapped. The Supreme Commander of the world's most lethal assassin vanguard has awakened. He doesn't need armies or guns. With eyes that calculate the exact time, cause, and probability of death for anyone he observes, Ren turns the city into his personal weapon. A failing chandelier, a ruptured gas valve, a mathematically flawless chain reaction... The Rossi family thought they were discarding a parasite. Instead, they unleashed the Reaper. Now, they will watch their criminal empire burn, one flawless "accident" at a time.

For three years, everyone saw him as nothing more than a useless son-in-law. But when his wife finally chose to believe in him, the man who had been hiding in the shadows decided it was time to show the entire city who they had been mocking all along.

Synopsis Killian Holland was a live-in son-in-law of the Pratt family. Unknown to them, he was secretly assigned to help his wife's family from bankruptcy. Killian had treated the Head of the Pratt family, and unable to rescue him completely, he made a vow to marry his daughter and help the company from collapsing. In the union, Killian was seen as nothing but a worthless fellow. They treated him like garbage. They turned him into their errand boy. On the last day at the Pratt mansion, there came a divorce. His wife filed for a divorce and not all, she tried to kill him. Killian Holland decided to get revenge for the humiliations, sufferings, and pains the Pratt family had made him pass through.

Caught up in a sinister plot against his family, Dean Bradson watched his mother be killed before his very eyes. Bloodied and left for dead, he was found and rescued by a young Mia Hamilton. It's been 15 years since that fateful day and Dean has returned to his old hometown with only three things in mind. The first was to find Mia Hamilton and repay her for her good deeds, the 2nd was to find the reason for his mothers death and punish those responsible, and the final reason was to fulfil the promise he made to a father he never knew. Dean was determined to make sure no one would stop him from achieving his goals

To the world, Salim Bakar was the "worthless" son of the elite Bakar real estate dynasty. While his brothers closed multi-million dollar deals, Salim spent his time on his phone, managing obscure influencers in the "frivolous" world of TikTok. The tension boils over at the Bakar Group’s 50th Anniversary Gala. In front of the city’s elite, Salim is publicly betrayed by his own father. "A Bakar is a lion of industry, not a lapdog for internet clowns," his father bellows. Disowned, stripped of his inheritance, and cast out into the rain, Salim is left with nothing but his smartphone. But the Bakars made a fatal mistake: they confused "quiet" with "weak." They didn't know Salim’s hidden identity. He is the "Ghost Manager," a digital genius who controls the world’s largest viral talent agency. With his Cold Protagonist mindset, Salim decides it’s time for a lesson in business. Using his God-Tier Manager System, he begins to manipulate the trends that the Bakar Group relies on for their "modern" rebranding. As Salim builds a new-media empire that dwarfs his family’s dying industry, the Bakars find themselves losing millions. Desperate, they seek a meeting with the mysterious "King of Influence" to save their company. The face-slapping begins when the boardroom doors open, and the "disgrace" they spat on is the one holding their debt. Salim isn't back for a reunion; he’s back for revenge.

Humiliated by his cheating girlfriend and beaten like a nobody, he thinks he has hit rock bottom, until one phone call reveals the truth about his birth. Overnight, the broke waiter becomes the hidden heir to an empire powerful enough to make an entire city bow.

Nathan Cole thought his life was finally turning around. After years of devotion, Sophia Miller had finally invited him over, and he believed their relationship was about to take the next step. Instead, he walked into his worst nightmare...a cruel betrayal orchestrated by Sophia and her lover, the arrogant Lucas Reed. Used, humiliated, and discarded, Nathan barely had the strength to fight back after sacrificing his own bone marrow to save Sophia’s life. Left battered and bleeding, he was thrown into a cage with ravenous dogs, left to die. But when all seemed lost, something inside him awakened. A mysterious ring on his finger pulsed with power, flooding his body with strength beyond imagination. In a single moment, the weak, broken Nathan was gone—reborn as something far greater. Before he could process his transformation, an elite military force arrived, led by the cold and commanding Harper Valente. She revealed a truth more shocking than anything he had ever known—Nathan was the lost heir to the most powerful man in the world, hidden away since birth for his own protection. Now, the time had come for him to reclaim his destiny. Betrayed, reborn, and thrust into a world of power and secrets, Nathan faces a choice: walk away from the past and embrace his true heritage, or seek revenge on those who shattered him. But as enemies from the shadows close in, one thing is clear—Nathan Cole is no longer a pawn. He is a force to be reckoned with.

Three months before the apocalypse, Sean Miles got a second chance at life. In his previous life, he trusted the woman he loved with everything he had. She repaid him with betrayal. When the apocalypse began, Sean was infected by a mutated wolf while trying to protect the survivors. Desperate for the antiviral serum he had brought back, he returned to his wife—only to find her in bed with another man. “Jessica… where is my serum?” She looked away. “Sean, I gave it to Zach. He was sick.” “A cold?” Sean stared at her, barely able to stand. “You gave the only serum that can save my life to your lover because he had a fever?” “Don't be dramatic. We'll find another one.” But there was no other one. Sean died knowing the woman he had protected for six years had chosen another man over him. Then he opened his eyes. Three months before the apocalypse. Alive. Young. And holding memories of everything that was coming. This time, Sean had no intention of being anyone's fool. He divorced Jessica before the apocalypse began. Then he used his memories of the future to win hundreds of millions in the lottery, hiding his fortune where she could never touch it. While the world laughed at the man who suddenly disappeared from his wife's life, Sean was preparing. Jessica thought she had finally gotten rid of her useless husband. She had no idea that the man she abandoned was preparing to become the most powerful survivor on Earth. When she eventually came begging, Sean would have only one answer. “You chose him when I had nothing.” He looked through the fortress window as the first signs of the apocalypse appeared. “Now that I have everything… why would I choose you?”

Aster Vale is reincarnated as a minor character destined to die at the very beginning of the story. Determined to survive, all he wants is to make money by selling junk. But everything changes when his glitched system turns every piece of scrap he creates into an artifact with absolute conceptual power. While Aster is busy chasing profits, the rest of the world mistakes him for a mysterious being manipulating fate itself. Amid tournaments, dungeons, wars, and an approaching apocalypse, Aster has only one thing on his mind: "How much can I sell all this for?"