Is 'Level Up Legacy' Inspired By Korean Web Novels Or LitRPG?

WARNING: THIS BOOK CONTAINS EXPLICIT SCENES AND MATURE ELEMENTS, SUITABLE ONLY FOR READERS AGED 18 AND ABOVE. Read at your own discretion. Their fathers were legends. One ruled the university as the Devil Gang Leader. The other conquered it as the infamous Casanova. Now it's Zack and Justin's turn. The campus expects them to inherit the chaos, the power, and the reputation their fathers left behind. But legends aren't meant to be copied. They're meant to be surpassed. Will they follow their fathers' footsteps... Or create a legacy that eclipses them all?

When the apocalypse came, she lost everything. Starving, hunted, and desperate, she trusted the one man she loved… only for him to betray her in the cruelest way possible. He stole her last supplies to please another woman and left her to die in a sea of the undead. But death wasn’t the end. She woke up days before the world collapsed. After cutting ties with her ungrateful ex and his parasitic family, a mysterious voice awakens in her mind, LUS, a Level-Up System designed to help her survive the coming end. With knowledge of the future and a system guiding her every move, she begins to prepare. She stockpiles resources, builds a base, and learns how to fight back against the horrors that once destroyed her. And when the apocalypse arrives again… she’s ready. But survival isn’t the only thing waiting for her in this new life. A silent killer who watches her like prey. A manipulative genius who wants to unravel her secrets. A gentle protector who sees the girl she hides. And a dangerous man who thrives in chaos. As the world burns and power shifts, they’re all drawn to her, each with their own motives, each with their own darkness. Even her past refuses to stay buried. Because now, the man who once abandoned her is back, broken, desperate, and begging for a second chance. Too bad she has no time for regrets. Not when she’s busy rising to power… and building a kingdom in the ruins of the world.

Elina thought she had hit rock bottom. She lost her job. Her therapy session dredged up memories of the ex-boyfriend who stalked and traumatized her. The only thing she had left to look forward to was the finale of her favorite fantasy series, Moonbound Faith. Then the show ended. The heroes won. The villain died. Everyone got their happily-ever-after. That same night, a knock at her door shatters what little peace she has left. Her ex is standing outside. The man who was supposed to be in prison. Forced to flee into a storm, Elina runs until she reaches the edge of a cliff with nowhere left to go. Faced with a choice between death and returning to the man who destroyed her life, she jumps. But instead of dying, she wakes up inside Moonbound Faith. Not as the heroine. Not as a side character. But as Luna—the infamous villainess whose tragic death she celebrated only hours before. Determined to survive, Elina plans to use her knowledge of the story to change her fate. But everything she thought she knew begins to unravel when a small boy tugs on her sleeve and calls her one word: “Mom.” The original story never mentioned a child. And when Elina uncovers the truth behind his existence, she realizes something terrifying. The villainess was never the villain. The story lied. And the ending she remembers may not be the ending waiting for her at all.

After transmigrating through three novels in a row, the hardest thing I ever suffer through is drinking iced long black. But when I open my eyes again, I somehow become the pathetic simp side character in a trashy romance novel. Just as I debate whether to file a complaint against the system, the trembling system hurriedly explains something to me. Although this is a trashy romance novel, it is also an unfinished abandoned novel. I ask, "So you're saying I decide how the story develops?" The system replied, "Yes. Everything is completely under your control." Satisfied, I lazily stretch and begin checking the original Jacob's background. He has a trillionaire father and a billionaire mother. On top of that, he has seven rich and beautiful older sisters. With such a ridiculously overpowered setup, how can he go around simping for a broke college girl with no money? What a complete waste!

I caught my fiancé and the fake heiress in the act. They didn’t show an ounce of guilt; the heiress even laughed at me, full of mockery. “What I have isn’t just this,” she said. “Last year, I was bound to the Score-Boosting System. No matter what score you got on the SAT, I was always a little higher. Didn’t you notice?” “Natalie,” Vivian sneered, “as long as I’m around, you’ll never get ahead of me!” Anger surged through me. I wanted to take them down with me, but then a gas explosion struck, and the three of us were reborn at the same moment. I was welcomed back into the Sullivan family. Grandpa Sullivan declared that whoever became the SAT champion would inherit the family fortune. The fake heiress boasted proudly, “Natalie, don’t even try. You’ll always be my stepping stone!” I smiled. “If you’re always a little ahead of me, fine. I’ll just set the highest score in history.”

I woke up inside a novel, and not even as an important character. I became a pretty background extra in a smut novel. My brother, however, was the only normal person in the entire story. His character setting was the one man the soft, delicate heroine could never win over. He was the cold, unattainable Prince Charming she could never conquer. When the heroine cried and confessed her love, he was studying. When she offered him her whole heart and body, he was busy starting a company. When she spiraled into scandals and nightlife, he was already a billionaire, calm and untouchable. I thought he would live a quiet, ascetic life forever. Until one night, I walked in on him at midnight… holding a piece of clothing I recognized all too well, murmuring a name over and over, a name so familiar that my scalp tingled.