The whiteness

A vast expanse of never-ending white.

Both the ground and the sky, were white, with bits of black randomly strewed about, as if sprinkled onto a canvas.

A piece of the whiteness moved, emerging from the white sand, revealing itself to be a creature almost completely white.

It had no mouth or nose, no hair, nothing on its head except a pair of pitch-black circles that were its eyes.

Its hands were long, touching the floor when it stood, hunched on its much shorter legs.

It stood like that, unmoving.

The black in the sky moved, but it didn't.

It remained in its place for an unknown amount of time, as the bits of black in the sky moved continuously, but slowly.

It did not move when a resounding boom shook off the remaining sand on its shoulders.

It did not move when a shockwave knocked it down into the sand.

It did not move when a white wave of energy drew out the black in the ground.

It did not move when a blue wave of energy washed all the bits of black away.

It did not move when the black in the sky returned.

It did not move when a completely black creature, less than a third its size drew closer.

It did not move when it was attacked.

It did not move when it heard the screams of the attacking creature.

It did not move when the creature was absorbed into itself, becoming a black dot in its chest.

It did not move when the second one approached, or the third, or the fourth. All of them being absorbed, making the black in its chest sprout vein-like lines that spread across its body.

It did not move when the black touched its eye, and all the rest of the black surged and vanished, leaving a single line connecting its right eye to its chest.

It did not move when the fifth creature appeared.

It did not move when it attacked.

It did not move when the line completely vanished.

After a very long time, the line reappeared.

And it blinked, slowly moving its eyelashless eyelids.

It pushed itself to its feet and looked around, seeing no end to the white sand.

It started to move.

It walked slowly, aimlessly, not knowing where it was going. But a deep instinct told it to move, to find what was lacking.

So it walked, and it walked, and it walked.

The black in the sky grew less and less as it continued walking.

Eventually, it came to a deep pit, filled with black sand.

It looked at the sand curiously, not knowing what it meant.

It walked through the black sand, the black clinging to its skin, turning the sand back to white.

The black flowed to its chest, and the now white sand fell to the ground as it trudged on.

Eventually, the black in the sky began to grow, and it encountered the black creatures once more.

This one seemed even smaller than the first one, barely a fifth of its size, but it was the one that had grown in size, the black one was similar in size to the others that it had absorbed before.

The creature screamed and charged towards it, only for its head to be grabbed by a giant palm.

The black stained its white hands as the creature dissipated into the wind.

The black flowed, and the lines started to spread once more.

It continued to walk and absorb every creature that it found, until the black reached its face.

This time, the black pulsed, and the creature fell asleep.

When it awoke, it discovered that it now had a mouth, and its legs had grown as well.

It continued to walk and consume, but this time, the black grew much slower.

It took 50 creatures for the black to pulse once again.

This time, a cocoon formed around it, and it began to shrink in size.

When it emerged from its cocoon, it was a quarter the size it was before.

Now, it could hear and smell, but it did not have ears or a nose.

Its head had grown two horns, forming a shape like a crescent moon, and its fingers were longer and pointed.

Its eyes had changed as well. Now the creature had pure white irises without pupils for eyes, surrounded by a black sclera.

Thoughts appeared in its head, telling it what and where it was.

It sat on the sand, looking up to the white sky.

It felt that something was wrong.

It was not supposed to be white.

It was supposed to be black, like all the others it had seen and devoured.

It sat like that for a few minutes, before getting up, and continuing its walk.

The black creatures no longer attacked it, but it needed their black, their negativity, to grow.

This time, it had to absorb more than 300 of them to grow again.

The cocoon shrunk even further.

When it emerged from it, it was the same size as the creatures that it had first devoured.

It now had a tail, thin and bony, with a sharp spike at the end.

Blades had replaced the tips of its fingers and its horns had grown, now double their previous size.

The white creature had grown an extra layer of white over parts of its body, forming an armor, that covered its chest, forearms, shins, and back. 

The armor over its forearm had grown a point near its elbows.

It climbed to the top of a dune, and looked at its surroundings.

It spotted a taller dune some distance away, and bounded towards it.

Once it climbed to the top, it turned to look at the place where it came from.

It opened its mouth, and a black ball emerged from its throat and into its mouth, formed by energy that it compressed.

It flew out of its mouth and floated in front of it.

The ball grew as the creature fed it with energy, slowly moving higher to float in front of the creature's face.

Then the creature directed it and released its hold, and the ball shot out, causing the nearby sand to move.

It struck its target and exploded, causing a loud boom.

The creature waited for a moment, then turned around and left.

Where the dune was previously, there was now a deep pit.