1 Prologue: The Vow in the Dust

Eighteen years ago, a turning point quietly stirred on the scales of history. Fifteen young individuals, their lives suddenly intruded upon by an unexpected encounter. They hailed from different countries, each bearing their own dreams and faiths, but at that moment, their shared conviction—pursuit of glory and justice— brought them together into a deep friendship. This bond became their sharp weapon against the world's malice.

Back then, the world was far from perfect. The Doomsday Church and demons allied, their malevolent shadow expanding to every corner of the world, causing endless pain and despair for humankind. These fifteen young individuals, though from different countries, were united in spirit, like brothers. Under the leadership of their commander, Noss, they resolved to confront the world's darkness.

They trained day and night, watering the seeds of growth with their sweat, using their resilience and determination to continuously improve their strength, hoping one day to possess enough power to combat these evil forces. During their training, five of them realized a potent ability—the power of summoning. Through this power, they could conjure formidable spirit warriors to aid them in battle. The spirit warriors, massive in stature and unmatched in strength, brought earth-shattering changes to the battlefield with each summon.

The remaining ten, although they did not acquire the summoner's power, surprisingly obtained another potent force—shapeshifting. They could transform into powerful creatures during battle, like Bane, who could morph into an immensely powerful bear warrior.

They, after countless battles and life-and-death ordeals, withstood the relentless pursuit of the Doomsday Church, persisted in their beliefs, and never once surrendered. Their eyes shimmered with the pursuit of glory and justice, the gaze of a warrior, a gaze full of hope for the world.

There are many tales of their legendary exploits, but the most heartbreaking among them was the Battle of Alser Island. Alser Island, a beautiful and mysterious place, witnessed the fiercest battle of the fifteen young individuals and their most painful sacrifice.

It was a battlefield akin to purgatory. The demonic and Doomsday Church forces were rapidly expanding, their dark influence pouring out like a relentless tide. Meanwhile, the fifteen young individuals and their allies bravely resisted, confronting this vicious dark force with fearless courage and unwavering faith.

The brutality and ruthlessness of this war were beyond anyone's imagination. It was a sudden assault without warning, a merciless massacre, a heartbreaking catastrophe.

That day, the sky was as gray as iron, seemingly foretelling the upcoming storm. The dark clouds enveloping Alser Island pressed down on the sky, looming in everyone's hearts. The air was dense with tension and heaviness, the premonition of war's outbreak.

The fifteen young individuals stood side by side, their gaze firm and resolute, staring directly at the enemy forces ahead. Dressed in various types of armor and wielding different weapons, they were symbols of their faith and determination. Behind them were their allied forces, every face etched with resolve and tenacity.

Suddenly, a roar pierced the silence, a war cry from the allied forces of the demons and the Doomsday Church. They surged forth like a flood, the massive, dark crowd seemingly ready to swallow the earth. The malice emanating from them was suffocating, like a poisonous miasma.

However, the fifteen young individuals did not retreat. They raised their weapons and charged towards the enemy. Their strength erupted on the battlefield, a power brought forth by their unwavering faith and fearless courage. They resisted fiercely, engaging the forces of evil in intense combat.

The atmosphere on the battlefield intensified, with thunderous clashes piercing the sky, akin to a tragic war song echoing through the air. Thus marked the beginning of the Battle of Alser Island. The madness of war, the cruelty of human nature, and the struggle between life and death, all were enacted on this piece of land.

The fifteen young individuals fought valiantly on the battlefield, engaging in a bloodbath with the combined forces of the demons and the Doomsday Church. Some of them utilized their summoner abilities to call forth massive soul warriors to charge at the enemy. Meanwhile, others employed their incarnation abilities, transforming into powerful creatures to confront the demons.

The battlefield was awash with the scent of blood and death, but it was also brimming with bravery and determination. The young individuals resisted with all their might, their courage and resolution illuminating the dark battlefield. Every attack, every defense, embodied their resistance against evil and persistence in righteousness.

However, the ruthlessness of war could not be avoided. Eight warriors forever laid to rest on Alser Island, their souls forever wandering this land. They used their lives to testify the power of courage, the strength of faith, and the might of justice. Their sacrifices turned Alser Island into a bloody battlefield, but their valor and persistence also transformed this island into a sacred land of heroes.

Their story is the tale of the Battle of Alser Island. It's an epic of courage, a legend of resilience. Though the war brought endless pain and sorrow, it also gave birth to boundless heroism and conviction.

The seven warriors who returned home didn't receive the hero's welcome they deserved; instead, their formidable power stirred the avarice of various nations, becoming a focal point of contention. Their significant achievements on the battlefield were overshadowed by the indifference and suspicion of their countrymen. This pain cut deeper than any blade on the battlefield. Some were hunted down, some were deceived, some were thrown into prison... However, they didn't succumb to this suffering. They chose to remain resilient, chose to march forward relentlessly. They turned this pain into their motivation, propelling themselves onward. They guarded their secrets, faced the risk of pursuit, changed their names, and gradually faded into obscurity. All these sacrifices finally brought about a long-awaited peace to the world.

But now, someone is seeking to disrupt this tranquil world...