UNKILLABLE IN ISEKAI

Before the rise of the Knight-Hunters, there were the Knights and the Hunters. These elite warriors were the protectors of the multiverse and the guardians of every realm, standing as the first and last line of defense against the forces of darkness—monsters, supernaturals, and all manner of evil entities. For eons, these creatures waged a relentless war against humanity, striving to conquer the universe. This conflict predated the rise of civilization, back when the Four Lands were still primitive, united only by the shared threat of annihilation. From this ancient struggle, the Knights and Hunters emerged as humanity’s champions, forming alliances across the multiverse and gaining new allies along the way.

However, even among the monsters and supernaturals, there was no unity. Corruption spread through their hierarchy, fracturing any hope of a cohesive purpose. Some chose to join humanity, forging pacts that allowed both species to evolve together, sharing their knowledge and powers. Yet, lurking in the shadows was an even greater evil—an ancient force of unimaginable power. Legends foretold of its return, a cataclysm that would end all existence. This being wasn’t defeated, but rather imprisoned by the ancestors of the Four Lands. The pact with otherworldly beings was sealed as a safeguard against this threat. But the corruption continued to spread, and soon even the lowest-ranked creatures, with their borrowed powers from the ancient evil, could rival the mightiest Knights and Hunters.

This division shattered the unity of the Four Lands. Now they wait, divided, for the day when the prophecy will be fulfilled—a prophecy that speaks of a savior, a chosen one who will either liberate this world from chaos or bring about its end.

And that savior? He’s not what you expect.

A hero from a different dimension, one who is virtually unkillable, thrust into an unfamiliar world to discover his purpose and destiny.

"This is the—" began the author, but he was abruptly interrupted.

"Okay! I’ve got it from here, author," said a voice. "This is my story, after all, and your introduction? A bit too vague."

The speaker is none other than Joseph Benjamin Carmen, better known as JBC, or Unkillable.

"Yeah, that’s right. This is the story of Unkillable in Isekai: The Last. Oh, and trust me, dear readers, buckle up, because there’s going to be a ton of spoilers. We’re talking references to every fiction and non-fiction you can think of, fourth-wall breaks, epic action, wild adventures, some romance, even some erotica, and of course, plenty of gruesome scenes. This novel? It’s R-rated. Viewer discretion advised. So, if you’re ready to have your whole idea of isekai and LitRPG turned upside down, let’s dive in."

Unkillable grinned. "Hell yeah! This is sick! Wicked sick!"

***

In the embattled kingdom of Fujimori (Wisteria Forest Kingdom), two wars raged simultaneously. Powerful monsters and supernaturals invaded every major city, village, town, prefecture, and island, unleashing chaos upon the once-peaceful land. King Yusuke Kazuhiro and Queen Naomi Kazuhiro, alongside their remaining knights and hunters, valiantly fought to protect their kingdom.

Meanwhile, on the other side of the battlefield, a group of hunters led by Prince Yoshi Kazuhiro, a skilled knight-hunter, investigated a mysterious dungeon where the chaos began. As they ventured deeper, they discovered ancient runes adorning the walls and a malevolent energy permeating the air. Yoshi's instincts warned him to retreat, but he pressed on, determined to uncover the truth.

The dungeon, however, was a mere facade. It was the epicenter of evil, and its dark forces had broken free, sparking the war. As the situation spiraled out of control, Yoshi telepathically alerted his elder brother, Yoshito Kazuhiro, a seasoned knight and master strategist. Yoshito rallied a group of knights and rushed to his brother's aid, but they were ambushed en route, surrounded by the forces of darkness.

The ensuing battle was fierce, with spells and swords clashing in a chaotic melee. The fate of Fujimori hung in the balance, as the Kazuhiro brothers and their allies fought to stem the tide of darkness.

On the opposite side of the dungeon, the creatures emerged, leaving a trail of devastation in their wake as they marched towards the kingdom's heart. Despite their valiant efforts, the king and queen were vastly outnumbered, and the kingdom's defenses were breached. The people were at the mercy of the monsters, and the battle became a bloodbath. No matter how many creatures were slain, their numbers seemed to grow, fueling the chaos.

In the heat of the battle, Yoshi Kazuhiro and a few surviving hunters finally joined forces with Yoshito Kazuhiro and his knights, launching a fierce counterattack against the creatures. After an intense and brutal struggle, both sides momentarily regrouped, exchanging blows and cosmic powers in a spectacular display. The air was heavy with tension, the ground trembling with anticipation, as both sides prepared for another clash.

However, their brief respite was shattered when both forces charged at each other, their battle cries echoing across the land. Just as they were about to collide, a piercing sound tore through the sky, shattering the moment. A being, falling like a blazing comet, hurtled through space and crashed into the midst of the battle, unleashing a massive shockwave that nearly leveled the area. The battle came to an abrupt halt, with some caught in the crossfire and others left unharmed.

Both sides stood frozen in fear and confusion, each suspecting that this was a secret weapon unleashed by their enemies to turn the tide of war. The sudden arrival of this mysterious being had brought the chaos to a standstill, leaving everyone wondering what would happen next.

As the smoke cleared, the being emerged from the crater, naked and crackling with energy. Lightning arced from his eyes and body, and the Xentrocurnia Prime tech orb hovered beside him, pulsating with raw power. The three vertical marks on his forehead flickered erratically, struggling to contain his unstable power. The battlefield fell silent, as if the world itself held its breath. The only sound was the being's steady breathing, a rhythmic cadence that seemed to synchronize with the kingdom's heartbeat.

His body, though calm, still pulsed with raw power and energy, while the three vertical line marks on his forehead continued to flicker. Both sides watched in awe, whispering silent questions: Who was this stranger? Was he an ally or an enemy? Had he come to aid Fujimori (Wisteria Forest Kingdom) or destroy it?

Both sides stood frozen, each suspecting a secret weapon unleashed by their enemies. The being's gaze swept across the battlefield, his eyes burning with an inner fire that seemed to pierce reality. As both sides hesitated, a creature from the opposing side, fueled by impatience and destruction, charged at the being.

In an instant, the creature was vaporized into nothingness by the being's mere presence. The Xentrocurnia Prime tech orb had acted swiftly, its power coursing through the being like a river of fire.

As the dust settled, the being turned his attention to the enemy, his eyes blazing with fierce determination. With incomprehensible speed, he effortlessly vanquished the forces of darkness, his movements a blur of light and energy. The battlefield transformed into a graveyard, with creatures of darkness reduced to smoldering husks. Even the powerful princes and highest-ranking officials couldn't pinpoint his velocity.

After unleashing his wrath, the being floated mid-air, drenched in a gruesome tapestry of blood, guts, and mangled remains. The dust settled, revealing a ghastly sight: his body was smeared with the entrails of his enemies, their severed limbs and organs hanging from his skin like macabre ornaments.

The air was heavy with the stench of charred flesh and burning blood, as if the very earth itself had been scorched by his fury. The ground beneath him was slick with the gore of his vanquished foes, their bodies reduced to smoldering husks, their screams silenced by the brutal efficiency of his destruction. He then turned his attention to the kingdom's forces, focusing on Yoshi Kazuhiro, Yoshito Kazuhiro, and Lyra, who stood at the forefront with a mix of awe and trepidation.

Suspecting they too would be a threat, he locked his gaze onto them, his eyes burning with an inner fire that seemed to pierce their souls. Raising his left fist, the air shuddered in anticipation. The Xentrocurnia Prime tech orb pulsed with energy, its power building to a crescendo.

As the being charged, his left fist clenched and ready to strike, a terrifying shockwave emanated from his hands. Yoshi Kazuhiro steeled himself for the impact, but Lyra, a powerful witch, stood tall, her eyes flashing with determination. She raised her hands, conjuring a powerful magical barrier around herself and the others. Yoshito Kazuhiro, anticipating the attack, reinforced Lyra's barrier, making it seemingly indestructible.

However, the being's punch was unlike anything they had ever seen. With a vertical stance in mid-air, he delivered a devastating blow that shattered the barrier in an instant. The barrier cracked slightly before rapidly disintegrating, unleashing intense energy that rippled through the surroundings, sending shockwaves through the landscape. The impact created a gust of wind that cut through the air, leaving a slight gash on every individual's cheek. Blood drops trickled from their wounds, but some, like Yoshito and Yoshi Kazuhiro, instantly healed. Lyra and a few others followed suit, while some struggled to recover, and others remained injured.

The shockwave and impact of the punch reverberated across Fujimori (Wisteria Forest Kingdom), vanquishing and vaporizing the remaining enemies. The atmosphere transformed, unleashing torrential rains. As the dust settled, the being collapsed, unconscious and exhausted. The three vertical marks on his forehead finally contained his infinite potential.

Yoshito Kazuhiro, Yoshi Kazuhiro, and Lyra approached him cautiously, unsure of what to make of this enigmatic being.

"Who is he?" Lyra whispered.

"I don't know," Yoshi Kazuhiro replied, "but he's definitely not from around here."

Yoshito Kazuhiro examined the being's forehead, studying the ancient markings. "These symbols... they're from the oldest tomes."

Lyra's eyes widened. "You think he's...?"

Yoshito Kazuhiro nodded. "I do. He's the one the prophecy spoke of. The savior, or the destroyer. We don't know which."

Their surroundings were unrecognizable, leaving many questioning the stranger's identity and origin. His powers were terrifying and unfathomable, leading some to wonder if he was the legendary monster or supernatural being in disguise.

As they retreated to their kingdom with the unconscious stranger, they took custody of him and the Xentrocurnia Prime tech orb, which had entered recharging mode. Pondering the being's identity, the kingdom's forces stirred. The king and queen, accompanied by their advisors, approached the group. "What news do you bring us?" Yusuke Kazuhiro asked, his eyes fixed on the mysterious being. Yoshi Kazuhiro bowed. "We've found the one the prophecy spoke of, Your Majesty. But we don't know what he is or what he wants."

Queen Naomi's eyes sparkled with intrigue. "Bring him to the palace. We must learn more about him." As the kingdom's forces took custody of the being, Lyra felt a sense of unease. Who was this mysterious being, and what did he want with their kingdom? Only time would tell.

The being was taken to the palace, placed in a special chamber designed to contain his immense power. The kingdom's scholars and mages began to study him, hoping to unlock the secrets of his past and true purpose.

As the days elapsed, the being stirred, his unconscious form still reeling from the incident that brought him to their shores. Yet, despite his comatose state, his powers continued to flicker and intensify with each passing moment. The kingdom held its collective breath, suspended in a state of uncertainty. Would this enigmatic being prove to be their salvation or their downfall? Only time would reveal the truth.

In the shadows, a figure watched the being with great interest, knowing the truth about his past and true purpose. This figure would stop at nothing to claim the being's power for themselves.

The story of the Unkillable had only just begun. The fate of the kingdom and the world hung in the balance. Would the Unkillable be the hero they needed or the villain they feared? The journey ahead would be filled with danger, magic, and adventure. The Unkillable's legend was about to unfold.