Harem System In A fantasy World

Every single life he took was being recorded and rewarded in the background. The system was quietly stacking experience with each kill as if it was struggling to keep up with the sheer speed and efficiency of his slaughter.

The notifications flashed one after the other in rapid succession, almost overlapping as his blade continued to rise and fall without pause.

He was going on an absolute killing spree, and it was not just the number of demons he was cutting down that made it terrifying, but the way his movements were evolving with every passing second.

His pace was steadily increasing, his steps becoming lighter, sharper, and more precise.

His body flowed from one motion into the next without even the slightest hint of hesitation, as if the battlefield itself had become an extension of him.

Before long, he reached a point where it no longer looked like he was reacting to attacks, but rather moving ahead of them and cutting down enemies before they even fully committed to their actions.

A horned demon lunged at him from the front with a jagged blade raised high, roaring in a guttural voice, "Die, human—!" but before the words could even fully leave its mouth, Elion’s body shifted slightly to the side with a smoothness that looked almost unreal.

His feet glided across the blood-soaked ground as his sword rose in a clean upward arc.

Shing!

He sliced through the demon’s lower jaw and continued straight through its skull, splitting it open as black blood and fragments of bone burst outward in a gruesome spray that painted the air in front of him.

Yet his expression did not change in the slightest as he stepped forward through the collapsing body without even sparing it another glance.

Another demon came from his blind side with a spear, thrusting toward his ribs with surprising speed, but Elion’s torso twisted just enough for the weapon to graze past his armor instead of piercing it.

In that same fluid motion, his blade reversed direction and cut backward under his arm, shff, slicing cleanly through the demon’s throat, the head tilting at an unnatural angle as blood sprayed in a thick arc behind him.

The body dropped to its knees before collapsing face-first into the dirt while Elion was already moving again, his feet tapping lightly against the ground as he flowed into the next engagement.

A larger demon, its body thick and muscular, charged straight at him with a heavy cleaver raised overhead, letting out a savage roar as it brought the weapon down with enough force to split the ground apart.

Elion stepped forward instead of retreating, his body slipping under the descending blade as it slammed into the earth behind him with a deafening crack.

Before the demon could even process what had happened, Elion’s sword flashed horizontally across its midsection.

Slice!

The blade cutting through flesh and bone with terrifying ease, the demon froze for a split second before its entire torso slid apart. Organs spilled out in a heavy, wet cascade that hit the ground with sickening sounds as the body collapsed into two halves.

He began moving so fast that, to anyone watching, it was as if something invisible was sweeping through the demon’s army and erasing anything hostile that entered, and as he moved, that space moved with him, carving a path through the battlefield that left nothing but mutilated corpses in its wake.

A coalition soldier stumbled backward into that space, his armor dented and his breathing ragged, a demon right behind him raising a blade to strike him down, shouting with savage glee, "You’re dead—!"

Before the weapon could descend, Elion appeared between them in a blur of motion, his sword flashing once, the demon’s arm separating mid-swing as blood sprayed outward.

Before the soldier could even comprehend what had happened, Elion followed through with a second strike that opened the demon’s throat. The body collapsed at the soldier’s feet while Elion was already gone, moving toward his next target without a single wasted motion.

His speed continued to increase, and it reached a point where watching him became disorienting, because one moment he was on the left side of the battlefield cutting down a demon with a clean diagonal slash, and the next he was already on the right side ducking under an incoming attack and severing his opponent’s legs before finishing it with a precise thrust through the skull.

Then he was somewhere else entirely, his movements overlapping in such a way that it looked like there were multiple of him fighting at once, a phantom tearing through the demon ranks with unstoppable momentum.

The coalition soldiers began to slow down, their attacks faltering as their attention was drawn toward him, and before long, many of them had stopped fighting entirely, their weapons hanging loosely in their hands as they stared in stunned disbelief at the young man who was cutting through the demon army by himself.

What they were witnessing did not look like a normal battle; it looked like a massacre, and not one they were a part of, but one they were watching unfold before their very eyes.

"...What... what is that..." one of them muttered under his breath, his voice trembling slightly as his eyes followed Elion’s movements across the battlefield.

"...He’s everywhere..." another whispered, unable to tear his gaze away as demon after demon fell in rapid succession, their bodies piling up in gruesome heaps as blood soaked into the ground.

The forest grew eerily quiet despite the ongoing carnage because the usual chaos of battle had been overshadowed by something far more overwhelming.

Eventually, the only sounds that truly stood out now were the crackling of flames consuming the trees and the wet, gruesome sounds of flesh being cut apart, accompanied by the fading screams of demons who had no chance to defend themselves.

"RETREAT!!!" the command rang out suddenly, loud and desperate, and though it was not clear who had shouted it first, the effect was immediate.

The demon army broke all at once, their formation collapsed as they turned and ran back the way they had come, abandoning the battlefield in a desperate attempt to escape whatever it was that had descended upon them.

The same demons who had charged forward with bloodlust, who had slaughtered humans without hesitation, who had feasted on flesh for sport, were now running with fear etched into their faces, their movements frantic and uncoordinated as they pushed past one another in their desperation to get away.

"Who... is that...?"

"That’s... that’s one of ours... right?"

"No way... no fucking way..."

"He’s... he’s a demon..." someone whispered from the coalition side, their voice filled with disbelief.

While the words were not meant literally, no one argued with the sentiment, because although they could clearly see that Elion was human, what they were witnessing defied any normal understanding of what a human should be capable of.

The sight was even more unforgettable because of the eerie red glow that the flames cast over the surroundings, and also because even as the demons fled, Elion did not stop.

He chased after the closest ones with the same relentless efficiency, his body moving like a predator closing in on its prey, his blade rising and falling in quick succession as he cut down those who lagged behind.

Shing!

A head rolled across the ground.

Shff!

A body split open from back to chest.

Crack!

Bones snapped under the force of his strikes; each kill was delivered without hesitation, without mercy, and without pause.

By this point, his body was completely covered in blood from the neck down, forming a grotesque mixture of black, red, green, and grey staining his clothes and armor, dripping from his limbs and pooling at his feet with every step he took.

It created an image that was both horrifying and mesmerizing, because despite the sheer brutality of the scene, there was something strangely beautiful about the way he moved.

His actions were precise and controlled, and his posture steady. His movements were fluid and almost elegant.

And yet, despite all the blood that coated him, not a single drop had touched his face, as if some unseen force had kept it clean, leaving his features completely immaculate, even more so since his expression remained unchanged.

His deep blue eyes kept that cold and detached look as they tracked his fleeing targets, while reflecting that red glow emitting from the burning surroundings.

His dark, wispy hair swayed gently with the wind as he moved, framing his face in a way that made the contrast between his appearance and his actions even more striking.

That image, of a young man standing amidst a battlefield drenched in blood, his face untouched, his expression blank, his eyes devoid of emotion, his blade cutting through bodies as if they were nothing, burned itself into the minds of every single person present, etching itself into their memories in a way that would never fade.

Eventually, the demons had retreated too far for him to continue the chase, their figures disappearing into the distance as they fled deeper into the forest, and Elion cut down the last one within his reach with a final, clean strike.

The blade passed through its neck with ease as the head rolled across the ground, and the body collapsed forward in a lifeless heap.

He finally came to a stop then, his breathing steady with his posture relaxed, as if he had not just single-handedly driven an entire army into retreat, and for a brief moment, the battlefield fell into complete silence.

The only sounds were the crackling of fire and the distant echoes of retreating footsteps, as those who remained could do nothing but stare at him in awe and disbelief, while far ahead, the surviving demons continued to run.

Perhaps they could rejoice and be grateful that they got to live to see another day.