How Does 'Solo Leveling' Crossover With 'Attack On Titan' In This Fanfic?

My boyfriend stole my last food and fuel, abandoned me to a zombie horde, and ran off with his mistress. Then I woke up three months before the apocalypse. This time, I’m taking everything for myself. Armed with memories of the future and a mysterious Level-Up System, I escape to the mountains, build a fortress, recruit dangerous allies, and carve out a kingdom in the ruins of the world. Now the man who betrayed me wants forgiveness. Unfortunately for him, I’ve become far more dangerous than the undead.

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.

Who is Eren? "My bodyguard." ~ Being the daughter of the wealthiest man of the town can be more problematic than one thinks. When a bunch of menaces frighten the Aiyer, a bodyguard is called to order. But he is not the typical bodyguard. No suit, no earpiece. Just a thick black leather jacket with grey jeans and black boots. But little does Hayat know who he is really. ~A refreshing, hot and romantic novel with a touch of mystery to sparkle your feelings~ Warning: Mature contents

Bima is just an introverted, scrawny kid used to living behind a gaming screen and being a constant target for body shaming. But his life takes a drastic turn when he wakes up in a ruined city crawling with zombies. In the midst of the chaos, something even stranger than the apocalypse emerges: the "Single Survival System," which hits him with absurd missions likes maintaining an ideal BMI, getting revenge on his bullies, and landing his first kiss. Every mission isn't just a ridiculous challenge; it’s a matter of life and death. Forced out of his comfort zone, Bima must face his dark past. He crosses paths with Donny, his former bully who is now a zombie, and Kevin, an ex-gym influencer who has transformed into a fanatical cult leader obsessed with the perfect physique and extreme protein intake. Amidst the chaos, Bima meets Lia, a tough convenience store clerk who harbors a deep-seated trauma toward food. Together, they survive nonsensical threats, ranging from zombie food vloggers obsessed with livestreaming death to grotesque mutants lurking underground. But the madness is only the beginning. Bima’s reckless actions catch the attention of a far more dangerous entity: the Master AI Fitness Freak, an artificial intelligence that views humans as inefficient unless they meet extreme nutritional standards. With the help of Riska, an AI with cold, business-like logic that shares a secret connection to Bima’s past, the battle shifts into a clash of ideologies: perfection versus happiness. In a world that worships muscles, protein, and ruthless efficiency, Bima fights back in an unexpected way, using Indomie as a symbol of balance, hope, and humanity.

'Zsystem' is where I found myself as the sole survivor of the apocalypse. The system is supposed to be my mother's "in sample" antidote to cure the virus. She was a mad scientist of the base where uninfected humans habitats to survive from the outer world. While she is burying herself with works, I decided to be the useless child and the only one she has. Isn't it amusing! Being treated as the daughter of a crazy woman who is obsessed with antidotes. Even after failing hundreds and thousands of times. She should know my well-being but she didn't. No matter how much of a genius I am, it's worthless! I am still garbage in her eyes...! I tried so hard to make her proud but all she cares about is the antidotes and saving humanity! She even left me under my aunt's care. Not looking back even once...! Well, that is what I thought before the zombies conquer the base and being forced to drink a certain red liquid which is the antidote! Alast, being thrown into a foreign system. ________________________________________________________________________ From the useless garbage to the only human that holds the opportunity to change the world. Will Ava overcome the mission to level up and obtain the honour of saving the people she loves? Or will she abandon it and faced a wrongful death? ___________________________________________ Author: Thank you for reading The Zombie's Leveling... And please share my story with others... To be honest it's not scary at all! This story is more to fantasy because... I want to, so don't complain people.... I will try to update every Saturday so that I will not just do whenever I want...:O And whoever reads this... Do support my work if you like it.

When the zombie apocalypse begins, Audrey's boyfriend leaves her behind to die. He chooses the prettier girl. The easier choice. He doesn't know Audrey will wake up forty-five hours in the past with one impossible advantage. LUS. A mysterious Level-Up System that measures life like an accountant measures profit. Every choice is an investment. Every mistake becomes a liability. Every mission offers power... if she survives long enough to collect it. This time, Audrey refuses to waste another second on people who never valued her. As the world collapses, Audrey builds more than a fortress. Every mission brings new power... and another dangerously capable man whose fate becomes tied to hers. Among them is Ronan, a quiet survivor who seems strangely familiar, as though he's carrying memories that don't belong to this lifetime. The more Audrey grows stronger, the more dangerous the truth becomes. Not everyone earned a second chance... and someone else may be playing the same game. Her ex will regret abandoning her. The dead will keep coming. And the only rule that matters is simple: Level up... or die.