Prologue:

3 Thousand years ago, when the first great chaos happened in the world of Akashia. This chaos gave birth to a flood of countless monster which started to fill the world with its horror.

Rivers of blood and guts flowed in the spine-chilling mountain that was formed by countless chewed skeletons and dismembered remain of its broken victims.

Together with the despairing cries of the helpless victims while asking for help resonated in this gruesome scenery. Million of lives were sacrificed in this calamity which caused the world to become helpless and despaired.

Until the innate abilities and skills of all races started to awaken. This awakening ignited courage in their hearts to fight and free the world from the shackles of chaos. Thus the Adventurer Alliance or Hunter Guild was born.

But their alliance never became fruitful because they lacked in wisdom and knowledge about their awakened abilities.

But this changed when the world spirit saw the courage of humanity to fight for their freedom, therefore the world spirit came up with the solution to the problem of humanity.

The world spirit shattered a small part of its core and bestow it to the humanity. The world spirit descended and said to the humanity in a warm voice

"Plant it in the surface of the world".

Humanity followed the world spirit and planted it in the center of their rugged camp. After they planted the World's core shard, the world became abnormally silent, no noise of the beasts and even the sound of air could be heard.

With this phenomenon, tension built in each soul of humanity that cause some of them to suffocate and collapse in the ground.

The tranquility of the world broke ten minutes later when a strong earthquake caused the place to tremble and form a structure that humanity call the "Dungeon".

The humanity named this dungeon as a "First Dungeon". The First Dungeon was a cave-like structure on the outside but made of complex tunnels in the inside. Countless weak monster could be found in this dungeon such as a blob like monster, oversized rats, and centipedes.

Because of this, the survivors made this their own personal training ground to train and gain knowledge on how to use their own skills and abilities, and also they began to build a small house for accommodation.

After 1000 years of hiding, training, and defending their lives they made a decision to eradicate the monsters. This was the start of another 1000 years war between humanity and monsters.

After 1000 years of fighting and killing, numerous generation has already passed and with this, the humanity regained 70 % of the world while the 30% remained in the hands of the monsters.

But after 10 decades when the humanity regained its world, the First Dungeon who became the first stronghold of humanity and became the observer of the struggle of humanity during chaos was suddenly gone.

The entire cave structure was suddenly gone like a plant that was uprooted from its pot and only deep chasm was left in the area. Many races argued that the dungeon had done its job that's why God taken it back.

Also many argued that they was being punished by God because of some unknown reasons. Nevertheless, no matter how hard they try to argues to each other, they knew that the shelter they loved was now gone.

So, to honor the First Dungeon and the hardship of humanity, they write a Historical Book that depict the deeds of countless heroes and The First Dungeon during the Chaos Era.

This Historical Book that written by the hands and minds of thousands people last until 1000 years before it was completely lost and forgotten by the New Era.