My Multisystem In Isekai

Krai Helmut, the third prince of Helmut Kingdom, was cast aside after awakening the “useless” skill Chaos Master. Abandoned near the Forest of a Thousand Monsters, he should have perished. Instead, dragons bowed, legends obeyed, and a discarded prince began his rise as a force that would shake the world.

After being reborn as the lord of a worthless domain, former HR manager Luke Crowe discovers that swords and magic aren’t his greatest weapons—management is. With a KPI system, a team of misfits, and absolutely no budget, he sets out to turn the poorest land in Valorion into an unstoppable power.

Peter Kent's girlfriend was murdered by a serial killer, but the killer has not been caught. After his girlfriend died, Kent began to experience many strange phenomena, seeing his girlfriend's body being cut into pieces. In order to save himself, Kent must find the killer. But do not think on this journey Kent encounters more and more mysterious phenomena. At this point, the System appeared and issued missions to help Kent survive and find the culprit.

She betrayed him. He vanished. Now he’s back—with silence, power, and a system she never knew existed. Two years ago, Adrian Cole gave Jessica Benson everything—his name, his loyalty, and his love. She gave him lies, a divorce paper, and a broken heart… all for another man. Now, everyone believes Adrian disappeared without a trace. But the truth is darker. After a near-death betrayal, he awakened a Secret System—one that feeds on silence, pain, and precision. He returns with nothing but a quiet fire in his eyes. No explanations. No revenge plans on paper. Just missions, silent upgrades… and a heart growing colder by the day. Jessica? She’s falling apart. The man she left behind is rising—untouchable, unreadable… and more dangerous than ever. But the System knows her secrets. And Adrian’s silence may be the last sound she ever hears.

My wife gave our final piece of meat to her secret lover while I stood freezing in a sixty-below-zero blizzard. The man who had cast aside everything to keep them alive was now a joke, a useless son-in-law left to perish in the cold. They were never aware of the truth. I had been the secret heir to the most powerful family in the city. I had thrown it all away for her. Mocked by my in-laws and treated as a servant, I still believed she loved me. Until the Cold Apocalypse occurred. The world froze, monsters came out, and civilization collapsed. My devotion to blindness brought me a miserable, frozen death. But death wasn‘t the end. It was three days before the end of the world when I finally opened my eyes. This time, the obedient husband is gone, replaced by something much worse. The Chimera King System has loaded. When I carried the carapaces of mutated monsters, I absorbed their DNA and the strength that comes with it. This time, I will not plead. I will not give. I will not love blindly. My wife and her lover believe they will be able to use me once more when the ice thaws. They’re wrong. This time... I will make sure they freeze.

A powerful man works behind the scenes to make his wife a star. But Bianca is so focused on her career that she takes advantage of her husband's love and doesn't even realize who he really is - the wealthy and mysterious Micheal. When she cheats on him and treats him badly, Micheal's love turns to anger. After she asks for a divorce, he starts a careful plan to ruin her fame. With precision and patience, Micheal takes control, leaving Bianca vulnerable and helpless. The question is, how far will he go to get his revenge?

Sofia Hayes never imagined that saving her family would cost her a marriage. After a crisis leaves her father’s company on the verge of collapse, Sofia is offered a deal by the Carter family: marry Daniel Carter, their mysterious heir, and remain his wife for one year. In return, her family’s debts will be paid and everything they have worked for will be protected. But Sofia has another reason for accepting. She believes the Carter family is responsible for destroying her family, and she plans to use her marriage to Daniel as a way into their world. If she can uncover their secrets, she may discover the truth—and get the revenge she has wanted for years. Daniel never expected his arranged wife to be so determined, guarded, and impossible to control. Their marriage begins as a business agreement, but beneath the tension, unexpected emotions begin to grow. The closer Sofia gets to Daniel, the harder it becomes to separate their agreement from the feelings neither of them is prepared to admit. Then Richard Carter, Daniel’s older brother, enters the picture. Richard knows something about Sofia’s past—something Daniel refuses to explain. On her wedding day, Richard gives Sofia a chilling warning: she should never have married into the Carter family. Now Sofia is trapped inside a family filled with secrets, betrayal, hidden motives, and dangerous truths. As she searches for answers, she begins to question everything she believed about her family and the Carters. Who destroyed her family? Why is Daniel hiding the truth? And can Sofia uncover the secret before her marriage becomes something more dangerous—and more real—than she intended? In a world of wealth, revenge, forbidden emotions, and family secrets, Sofia must decide whether to follow her heart or finish the revenge she started.

Alaric Hildebrand—the eldest heir to the Lord of Vaelcryss, House Hildebrand. A cruel betrayal forcibly wiped out his family. "It's my fault for falling for that girl," Alaric lamented regretfully. What should have been a happy day had turned into a stabbing without any harm. He swore revenge if he were to come back to life, even if it meant sacrificing everything he owned. –I Died on My Wedding Day

Once upon a time, I was as stupid as a dog. Wherever she went, I followed her, like a piece of chewing gum that could not be shaken off. I would eat shit and agree with her words. Everyone called me a "fool" and said that this was how my life would be, and how I would end. But when I finally woke up—— ...... "You said you were my wife but I do not deserve to be your husband? Oh, but look at your face! It's ugly to fit with mine even in a mere picture!" "Didn't you say you'd rather die than let me touch you? Now you're begging me, crying, wanting a son from me who looks like me—shouldn't you be dying instead?!" "Why is everyone saying I have been bullying? Sit back and watch, it's just the beginning." * * When the abandoned fool finally regained his memory, the whole world realized that they had offended the wrong person—they had to come begging for forgiveness. WHAT TO EXPECT: [o] In a nutshell, this is a Romance meets Indomitable Husband and The Heir... with a dash of Face slapping. [o] Progression Urban Story. No instantly showoff your wealth MC. [o] Much violence and romance elements. [o] Clever schemes, well detailed action, and in-depth character development and drama. [o] No system or magic

After finding out that his wife had been cheating on him, and that their daughter wasn't his, Jonathan was heartbroken.  He was sent to a two-week detention by his wife's lover.  During his desperate moment, the head steward of his wealthy family came to him and said, "Young master..."  Jonathan learned about his father's illness and had no option but to return to the family he had left three years ago to pursue love.  "Mark my words, Sarah! I will make you pay!"