Chapter 1: Floor One

The Tower appeared on a Tuesday.

No warning, no explanation. A pillar of impossibility rising from downtown Seoul, stretching up and up until it vanished into clouds that shouldn't have been able to hold anything so massive. Nine kilometers in diameter at the base, made of something that wasn't quite stone and wasn't quite metal, covered in doors that appeared and disappeared like breathing.

The first people who entered never came out. Neither did the second. Or the third.

Then someone made it to Floor 2, and everything changed.

The survivor came out transformed—stronger, faster, carrying a sword that glowed with power science couldn't explain. She'd gained abilities. Levels. A status screen floating in her vision showing stats and skills and experience points.

The Tower was a game. A deadly, impossible game that killed most who entered but rewarded the survivors with power beyond anything human.

Within a month, climbing became an industry.

---

Noah Reid stood at the entrance to the Tower, one hand pressed against the impossible surface, trying to convince himself to step through.

He was twenty-six. Average height, average build, unremarkable in every way. He'd been a software developer before the Tower—a decent one, nothing special—working through life with no particular ambition and no particular fear.

Then his sister had tried to climb.

Emma had made it to Floor 12 before something killed her. Noah didn't know what. The Tower didn't return bodies, didn't send notifications, didn't explain anything. One day she was climbing. The next, she wasn't.

His parents had begged him not to follow. "One child is enough to lose," his mother had said through tears. "Please."

But Noah couldn't live knowing Emma had died in there while he stayed safely outside. Couldn't spend the rest of his life wondering what had killed her, why it happened, whether he could have made a difference.

So here he was.

**[WELCOME, CLIMBER]**

**[INITIALIZING SYSTEM...]**

**[SCANNING...]**

**[NAME: NOAH REID]**

**[LEVEL: 1]**

**[PRIMARY ABILITY ASSIGNED: PATH SIGHT (UNIQUE)]**

**[DESCRIPTION: SEE THE OPTIMAL ROUTE THROUGH ANY OBSTACLE. COST: ONE MEMORY PER USE]**

**[WARNING: EXCESSIVE USE WILL RESULT IN COMPLETE MEMORY LOSS]**

**[WOULD YOU LIKE TO ENTER FLOOR 1? Y/N]**

Noah stared at the notification. Path Sight. A unique ability—rare, if the forums were to be believed, and potentially powerful. Being able to see the best route through any obstacle could mean the difference between life and death on the higher floors.

But the cost. One memory per use. Not a random memory—the system let him choose—but still. His memories were all he had of Emma. Of his parents. Of the life he was leaving behind.

*Is this what you want?* he asked himself. *To trade who you are for the chance to climb?*

The answer came immediately: yes. If losing memories was the price of finding out what happened to Emma, he'd pay it.

"Yes," he said aloud.

The Tower swallowed him whole.

---

Floor 1 was a forest.

Not a natural forest—the trees were too uniform, the spacing too perfect, the sky overhead a blank grey that pulsed with its own light. Everything about it screamed *artificial*, *designed*, *constructed*.

But it was still a forest. Dense undergrowth. Uncertain terrain. Countless places for monsters to hide.

**[FLOOR 1: THE PROVING GROUND]**

**[OBJECTIVE: REACH THE PORTAL TO FLOOR 2]**

**[OPTIONAL: DEFEAT THE FLOOR BOSS FOR BONUS REWARDS]**

**[TIME LIMIT: 24 HOURS]**

**[SURVIVORS: 23/100]**

Twenty-three out of a hundred. Noah felt cold at the statistic. He'd entered with ninety-nine other climbers—a wave system designed to ensure competitive pressure. And already, seventy-seven of them were dead.

Or maybe they'd just quit. The Tower let you leave at any time—until you reached Floor 10. After that, you climbed or you died.

A rustle in the undergrowth made Noah freeze. Something was moving out there. Something big.

**[ENEMY DETECTED: TRIAL WOLF]**

**[LEVEL: 3]**

**[DANGER RATING: MODERATE]**

The wolf emerged from the brush—a creature of silver fur and amber eyes, easily twice the size of any natural animal. It looked at Noah with the patient intelligence of a predator sizing up prey.

He had no weapons. No combat skills. Nothing but a unique ability he barely understood.

*Path Sight.*

Noah activated it without thinking, desperate for any edge.

**[PATH SIGHT ACTIVATED]**

**[COST: SELECT MEMORY TO SACRIFICE]**

A list appeared in his mind—not text, but impressions. Moments. The time he'd learned to ride a bike. His first kiss. The day he got accepted to university. Emma's graduation ceremony.

He couldn't lose any of those. Couldn't trade pieces of his life for—

The wolf lunged.

Noah grabbed the first memory he could bear to lose—a forgettable Wednesday when nothing had happened—and let it go.

The world transformed.

Golden lines appeared overlaying reality, showing him where to move, how to dodge, what path would keep him alive. He saw the wolf's trajectory before it happened, stepped aside, watched the creature sail past him into a tree trunk.

The wolf hit hard, stunned. The golden lines pointed to a rock on the ground, showed him the angle to strike, the force required.

Noah grabbed the rock and swung.

**[TRIAL WOLF DEFEATED]**

**[EXPERIENCE GAINED: 50]**

**[LEVEL UP: 1 → 2]**

He stood over the dissolving corpse, breathing hard. A Wednesday that had once meant nothing was now gone forever.

*This is the cost*, he thought. *This is what climbing means.*

He looked at the path the golden lines had traced, stretching forward through the forest toward Floor 2.

"Okay," Noah said to no one. "Let's see how far my memories will take me."

He started walking.

**[FLOOR 1 PROGRESS: 15%]**

**[MEMORIES REMAINING: ∞ - 1]**

The count had begun. And Noah intended to keep climbing until he found out why his sister had to die.