Zack, a former office worker who met his end too soon, finds himself reincarnated in a fantastical world—not as a hero, but as a mythical creature: a Sphinx, the Boss Guardian of the legendary Azure Void Secret Realm.

However, his glorious new life is short-lived. He awakens just as powerful cultivators are fleeing the realm, having successfully stolen the core treasure and triggered a catastrophic self-destruct sequence. With literally seconds left to live, Zack’s new Super Tower Defense System offers a desperate choice: reboot the entire dimension and lose every single treasure, resource, and guardian he was meant to protect.

Forced to spend half of his meager starting currency, Zack saves the land, but inherits an empty domain. The Secret Realm is now a blank slate—a vast, resource-depleted shell with zero defenses, an empty treasury, and only 100 Spirit Tokens to his name.

His mission is daunting: Rebuild. Using the Super Tower Defense System, Zack must strategically utilize his limited resources to create traps, cultivate new guardian beasts, replenish spirit mines, and forge the Nine Supreme Treasures of Heaven and Earth from scratch. He is a god of an empty world, forced to manage a cosmic construction project.

Zack lay on his bed and released a weak, trembling breath.


Once, he had been just an ordinary office worker — tired, overworked, and always rushing deadlines. But everything changed the day the doctor told him he had cancer.


After countless treatments and hospital visits, with nothing improving, Zack made a quiet decision: he left the city.


He moved to the countryside, bought a small piece of land, and turned it into a garden. The soil, the wind, the flowers… they brought him peace that hospitals never could.


One day, he found a stray dog wandering near his garden — thin, lonely, but gentle. Zack adopted her and named her Lumi. She became his only companion. Later, after a checkup at the vet, he learned she was pregnant. A few months later, Lumi gave birth to four healthy puppies.


Those days — the garden, the sunlight, the puppies playing in the grass — became the happiest days of Zack's entire life.


As his symptoms worsened, he was forced to put Lumi and her puppies — Sol, Mica, Rune, and Poppy — up for adoption. It broke him, but he didn't want them to watch him waste away.


"Well… it was fun while it lasted," Zack whispered.


He sighed softly, unable to stop himself from thinking aloud. His vision blurred as tears slid down his cheeks.


The truth was simple and cruel: he didn't want to die.


His fingers trembled. His breath grew shallow. His world dimmed.


> [Ding! The host is eligible for reincarnation.]


"Re…incarnation?" Zack's fading eyes widened slightly.


That was the last thing he heard before darkness swallowed everything.


Suddenly — or perhaps after an eternity — Zack's eyes fluttered open.


He found himself floating in a vast space filled with glowing symbols, drifting code, and endless holographic screens flashing messages in front of him.


> [The host is eligible for reincarnation.]


"Reincarnation…?" Zack muttered. "Like those novels… or the webtoons…"


It sounded absurd — yet strangely familiar.


After all, he had read a lot of them when work grew boring, and two of his closest friends were webtoon artists who dragged him into their strange hobbies.


The world dissolved into darkness again.


Chapter 1 - PROLOGUE