1 Prologue: Doomsday

In 1959, a year etched in history, the world faced its reckoning. Doomsday descended like a shroud, and with it came a phenomenon nobody could fathom. Portals, like rifts between realities, tore open the fabric of space and time. Out of these swirling gateways emerged the portals, mysterious conduits to realms beyond, each one a harbinger of the unknown.

These portals were far from benign. Within them lay dungeons, ominous labyrinths filled with creatures of nightmare. A chilling pattern emerged – for a span of 14 days, the portals grew weaker until their malevolent denizens spilled forth. Entire cities vanished, consumed by the relentless tide of monsters. Countries crumbled, their economies reduced to ash. The world reeled under the onslaught of an inexplicable cataclysm.

But in the face of this unprecedented darkness, a glimmer of hope emerged. The portals, it turned out, radiated an enigmatic energy. Those who dared come close found themselves transformed, endowed with extraordinary abilities. They were christened the Awakened, humanity's answer to the encroaching abyss. With powers that defied reality, they became the bulwark against the impending annihilation.

Amid the chaos, a phoenix of resilience rose from the ashes. The birth of a new nation, Andrea, marked a turning point. Positioned strategically, Andrea encompassed within its borders the very dungeons that wrought devastation. Yet, its leaders had a plan. They stationed guardians and soldiers, creating a last line of defense against the horrors that lurked within.

In the year 2020, the world had undergone a metamorphosis. The dungeons, it seemed, held secrets beyond the terror they unleashed. Materials within their depths offered solutions to problems that had plagued humanity for decades. Global warming became a thing of the past as technology soared to new heights, all thanks to dungeon-born resources.

And in the midst of this new era, another class of heroes emerged: the Rankers. These were the brave souls who chose to venture into dungeons, facing the horrors head-on. Their valor knew no bounds, and they sought to quell the menace at its source, whether within the dungeons' depths or beyond their yawning maws.

The world had changed, an intricate tapestry woven with threads of darkness and light. A tale of courage and fortitude, of monsters and saviors, unfolded against a backdrop of shifting dimensions. And as the portals continued to beckon, the fate of humanity remained both uncertain and strangely hopeful.