[Location: Unknown – The Trial Domain]
[Time: N/A]
The world didn't fade to black. It faded to white.
I blinked, expecting to see a dungeon cave or a combat arena. Instead, I was standing on a grid.
Infinite white space stretched out in every direction, marked by thin black lines forming perfect one-meter squares. There was no sky, no horizon, no sun. Just a uniform, clinical brightness that didn't cast shadows.
I looked down at myself. My ruined "Night-Weave Suit" was gone. The blood and grime were gone. I was wearing a simple, grey bodysuit that felt like second skin. My belt, my potions, and my Gravity Hammer were missing.
"Hello?" I called out.
My voice didn't echo. The sound died instantly, absorbed by the emptiness.
[System: Welcome to the Trial of Constants.]
The blue text box appeared, but it was enormous—ten feet tall, floating in the air like a billboard.
[System: Most Adventurers advance by proving their strength. They kill a beast. They survive a gauntlet. You, however, are not a Brute. You are a Variable.]
"A variable?" I asked.
[System: Magic is the art of bending the rules. You do not bend them. You rewrite the equations. To advance to your True Class, you must demonstrate mastery over the Three Laws.]
A shape materialized in front of me.
It was a sphere. A perfect, matte-black ball, about two meters in diameter. It hovered an inch above the grid.
[Trial 1: The Law of Inertia]
[Objective: Move the Object to the target zone.]
A red 'X' appeared on the grid, exactly fifty meters away.
I scoffed. "Move a ball? That's the test?"
I walked up to the sphere. It looked heavy, but I was Level 20 now. My Strength stat was decent.
I placed my hands on the black surface. It was cold and smooth.
"Here goes," I grunted and pushed.
It didn't move.
It didn't even vibrate. It felt like I was pushing against a mountain rooted in the earth's core.
I frowned. I planted my feet, engaged my core, and shoved with everything I had.
"Move!"
Nothing. My boots slipped on the grid floor.
[System: Force applied: 800 Newtons. Result: Negligible. Target Mass: Infinite.]
"Infinite?" I stepped back, panting. "You want me to move an object with infinite mass? That's physically impossible. Infinite mass requires infinite force."
[System: Incorrect. Infinite mass means it has infinite resistance to change in motion. It does not mean it cannot move. You are thinking like a Porter. Stop lifting. Start solving.]
I wiped sweat from my brow.
Stop lifting. Start solving.
I walked around the sphere.
Newton's First Law: An object at rest stays at rest unless acted upon by an unbalanced force.
If the mass is infinite (or effectively infinite), $F = ma$ tells me that for any finite Force $F$, the acceleration $a$ will be zero. I could push this thing with a rocket engine, and it wouldn't budge.
"So I can't push it," I muttered. "And I can't pull it."
I looked at the floor. The grid.
The sphere was hovering. It wasn't touching the ground. That meant friction wasn't the issue. It was pure Inertia. The reluctance of the universe to let this thing change its state.
"If I can't change the Force," I whispered, "I have to change the Frame of Reference."
I looked at the red X.
"System," I asked. "Is the floor fixed?"
[System: The floor is a defined plane. Z=0.]
"And the target?"
[System: The target is a coordinate. X=50, Y=0.]
"Okay." I sat down on the grid. "If I can't move the ball to the X... I have to move the X to the ball."
Or rather, I had to tilt the world.
I placed my hands on the grid floor.
Usually, I applied my skill to objects. Swords, slimes, hammers. But here, in this domain, everything was data. The floor wasn't concrete; it was a value.
[Active Skill: Gravity Manipulation]
[Target: The Environment (Local Grid)]
I didn't try to pull the ball. I focused on the space under the ball.
"Gravity isn't a force," I recited the theory. "Gravity is the curvature of spacetime."
I closed my eyes and imagined the grid lines bending. I imagined the red X being "downhill" from the black sphere.
I poured my mana into the floor.
Dip, I commanded.
The white grid began to warp. Visually, it looked like a rubber sheet being pulled down. The fifty meters between the sphere and the X became a steep slope.
The concept of "down" changed.
The sphere, despite its infinite mass, was subject to gravity. And if the floor tilted...
Creak.
The black ball began to rotate.
Slowly at first. Then gaining speed. It rolled down the invisible slope I had created in the fabric of the room.
It rumbled past me, picking up momentum, heading straight for the red X.
"Stop!" I yelled, realizing I had made it too steep. If it overshot the X, I'd fail.
I quickly slammed my hand on the grid again.
Flatten!
The slope snapped back to level.
The ball was rolling fast now. Infinite mass meant infinite momentum. It wasn't going to stop on its own.
"Friction!" I shouted.
I projected a field of [Max Friction] onto the grid squares right over the red X.
The ball hit the rough patch.
SCREEEEECH.
The sound of the universe tearing. The ball skidded, sparks of white data flying off the contact point. It groaned, fighting the resistance, and came to a halt dead center on the X.
[Trial 1: Complete.]
[Analysis: Candidate utilized Environmental Manipulation rather than Direct Force. Correct.]
The sphere dissolved into pixels.
I stood up, feeling a headache building behind my eyes. "That was just the warm-up, wasn't it?"
[System: Correct. Inertia is the resistance to change. You have overcome resistance. Now, you must understand Action and Reaction.]
The white room shifted.
The grid lines turned red.
A figure materialized fifty meters away.
It was me.
A perfect copy of Ash. Same grey bodysuit. Same height. Same face.
But this Ash didn't look tired. He looked bored.
[Trial 2: The Law of Interaction]
[Objective: Defeat the Reflection.]
[Condition: The Reflection mirrors every physical action you take with equal and opposite magnitude.]
I stared at the Clone.
"So if I punch him," I guessed, "he punches me back exactly as hard?"
[System: Precisely. If you push him, he pushes back. If you burn him, you burn. He is the physical manifestation of Newton's Third Law. To hurt him is to hurt yourself.]
The Clone cracked his neck. He raised his fists.
I raised my fists.
We circled each other.
This was a paradox. In a standard fight, you win by hitting harder than the other guy. But here, the harder I hit, the more damage I took. If I delivered a lethal blow, I would die instantly.
"I can't hit him," I realized.
The Clone lunged. He threw a right hook.
I dodged.
He didn't hit me, so I didn't take damage. But I couldn't win by dodging forever.
"Think," I told myself, weaving under a kick. "Equal and opposite reaction."
The Clone was aggressive. He wanted to hit me. He was the Action.
I needed to be the Reaction that didn't result in mutual destruction.
I looked at his feet.
He stepped forward, planting his foot to throw a punch.
When you walk, you push the ground backward. The ground pushes you forward. That's the Third Law.
"If I can't hit him..."
I waited for his next step. He committed his weight to his right foot.
I didn't attack him. I attacked the connection between him and the world.
[Skill: Friction = 0]
I cast it on the floor beneath his foot.
He pushed off the ground to punch. The ground didn't push back.
His foot slipped.
Because he expected resistance and found none, his own momentum betrayed him. He flailed wildy.
But that wasn't enough to defeat him.
As he slipped, I stepped in.
I didn't punch him. I grabbed his wrist.
"Grab," I whispered.
He grabbed my wrist in return.
We were locked together.
[System: Connection established. System is confused. What are you doing?]
"If I throw him, I get thrown," I muttered. "So I'm not going to throw him."
I started to spin.
I pulled him. He pulled me.
We began to rotate around a central point. A centrifuge.
Faster. Faster.
I used my [Gravity Manipulation] to lighten my own body mass, while increasing the gravity on him.
Centripetal force. $F = mv^2/r$.
Since I was lighter, I could anchor myself. Since he was heavier (thanks to my gravity debuff), the force pulling him outward was massive.
But because he was "Mirroring" me, he tried to lighten himself too.
"Oh no you don't," I gritted my teeth. "I'm the Administrator here."
I focused entirely on breaking the symmetry.
The Third Law states forces are equal and opposite. It doesn't say the objects have to be identical.
I poured every ounce of mana I had into increasing his density.
He became a lead weight. I became a feather.
I spun him around like a hammer thrower.
"Let go!" I shouted.
I released his wrist.
He released mine.
But because he was heavy and moving fast, his inertia was massive. Because I was light, I just stumbled back a few steps.
The Clone flew.
He launched across the grid, tumbling uncontrollably. He hit the invisible wall of the arena with a sickening thud.
He tried to stand up, but he was dizzy, disoriented by the rapid change in gravity and momentum.
He glitched. His form flickered.
The paradox was broken. I had forced the equation to unbalance by altering the variables of mass and friction, leaving the "Force" equal but the "Result" vastly different.
The Clone shattered into white shards.
[Trial 2: Complete.]
[Analysis: Candidate successfully decoupled the Reaction by altering the Mass variable.]
I fell to my knees, gasping. My mana bar was flashing red.
"Is... is that it?"
[System: Not quite.]
The white room began to darken. The grid lines began to glow a neon blue.
[System: You understand Inertia. You understand Interaction. Now comes the final constant.]
[Trial 3: The Law of Entropy]
A single candle appeared in the center of the room. It was unlit.
[Objective: Light the candle. And keep it lit forever.]
I stared at the candle.
"Keep it lit... forever?" I whispered. "That violates the Second Law of Thermodynamics. Entropy always increases. Energy disperses. Nothing lasts forever."
[System: Exactly. To be a Physics Mage is to accept the laws. To be a Ruler... is to break them.]
[System: Welcome to the final test, Ash. Let's see if you can create a Perpetual Motion Machine.]
I sat there in the dark, looking at the unlit candle.
This wasn't a fight. This was an impossibility.
And I had 5000 chapters to figure out how to break the universe.
"Okay," I said, cracking my knuckles. "Let's get to work."
[End of Chapter 23]