Once dismissed as mere myth, the once half-divine ruler of Uruk, Gilgamesh, gained newfound notoriety when his grand tomb was unearthed in the Middle East. This monumental discovery attracted a global array of scholars to the region, elevating their renown. Collaboratively, they erected Heaven's Gate, a symbol of humanity's relentless pursuit of knowledge. However, the tranquility surrounding this venture was ruptured when a band of covetous terrorists assailed Heaven's Gate, triggering a cataclysmic blast within the archaeological complex. Unexpectedly, this calamity led to the emergence of supernatural entities, altering the course of history. Amidst the chaos, siblings Kiyoko and Tatsuya crossed paths with enigmatic individuals possessing extraordinary abilities, who, amidst the scientific turmoil, vowed to restore equilibrium to a world in disarray. Yet, these seemingly benevolent and omnipotent beings operate under distinct factions, raising the haunting question: are they saviors destined to mend the world's fractures, or harbingers of its ruin?