According to the legend, once upon a time when the world first took shape, the gods share this world along with humans. At first, humanity were simple and devout, they worshipped the gods with all their heart, cherished their connection to nature and lived in harmony. However, due to rapid growth, mankind gradually gained new desire and ambition. They conquered lands, fought each other, and destroyed nature to establish their power. Disappointed, the gods then closed the door connected the realm of humans and the realm of gods, severed the connection between two worlds forever. Nevertheless, rumors said that there were vestiges that could prove the existence of gods remained in the present. SPOILER