Slave Water Tank (Chapter 2)
【Profile 1】
Name: Rina Gracel (Main Character)
Body: 151cm / 40kg / B77・W51・ H79
Maximum Capacity: 4.5 liters
Role: ???
【Prologue: Aptitude】
“Hah, hah, hah…”
I repeat shallow breaths over and over.
The air doesn’t reach deep into my lungs.
The more I try to breathe in, the harder it gets.
My stomach feels like it’s about to burst.

“Ri…na… Rina…”
The ghost of Serina, who burst instead of me, whispers to me again and again inside my head.
Serina is trying to drag me down into hell.
“I’m sorry… I’m sorry… Please stop, Serina…”
Apologies that reach no one spill out one after another.
But no matter how much I apologize, these feelings will never reach Serina anymore.
Why am I, who is useless, still alive?
That unanswerable question keeps spinning endlessly in my mind.
A dim room with no windows.
I can’t tell if it’s day or night, or how long I’ve been like this.
Unending pain continues forever with no end in sight.
BANG!!!
The only door in the room was flung open violently.
Beyond the door, morning sunlight poured in, making everything bright.
With the sun at his back, my master glared at me with a frightening expression.
N-no… I’m scared, please… stop already…!
“Today you won’t be done until I pack ten liters into you! So be prepared!”
Glug, glug, glug..
My master mercilessly poured cold water into a barrel suspended above me.
A hose stretched from the barrel remained stuck in my butt.
The water falling from such a height became a cold and heavy mass, forcing its way into my body.
“Stop! Please stop!! Aaaahhh!!”

Gurgle! Glorp, glorp-glorp!
A muddled sound I’ve never heard before echoes from deep inside my stomach.
My organs are being twisted and crushed by the pressure, screaming in pain.
My intestines rub against each other, threatening to tear apart with excruciating agony.
Flashes of light appear and disappear in front of my eyes.
Even though I’m already at my limit, the water keeps pouring in…
“Shut up! This time, you’ve got two choices: survive as the main tank, or burst. There’s no escape!!”
Glug, glug, glug…
The master refilled the barrel to the brim and lifted it even higher.
The pressure is higher than anything I’ve ever felt before.
My stomach swells to an unbelievable size.
“Gyaaaaaaahhh!!”

Before I knew it, I was screaming louder than I ever had before.
My stomach and intestines are stretched to their limit—completely full.
There isn’t even a single millimeter of space left inside me.
I can’t take it anymore.
I’m going to die here, aren’t I?
My skin will tear open, all my insides spilling out, and I’ll end up just like everyone else…
“Tch! Why the hell won’t this go in any further, you defective piece of junk!”
And yet, I still didn’t break.
It seems my belly is surprisingly tough.
Maybe it’s something I inherited from my mother and father—a kind of natural trait.
But… whether that was truly a blessing or not… now, I just don’t know anymore.
“…nn… nn…”

My throat felt crushed—I couldn’t make a sound anymore.
Oh… maybe I just wasn’t breathing at al
Serina… please, just take me with you… I can’t stand this pain anymore… I don’t want to do this…
I prayed as hard as I could.
But release from this hell didn’t come until after the sun had set.
The next day, I was put up for sale.
It seemed a buyer was found right away—I was carried off in a rattling wagon.
I had no idea where I was being taken.
After a while, the wagon stopped and the door swung open.
“Gahahaha!!”
“Tonight’s on me!”
Before my eyes was a bustling place I’d never seen before.
“…Is this… a tavern?”
