Following genetic experiments conducted by a group of scientists at the turn of the millennium, a biological explosion contaminated the genetic structure of life on Earth. Two attributes emerged from the ruins, known as Silhouette and Mirage; like Yin and Yang, they cannot exist without each other, but are fundamentally opposed in their nature and ideology. Only a Messenger, one …

The Armageddon came. A huge Heat Wave ruined the planet, humans have mutated into strange creatures who worship strange gods, trying to exterminate each other in bloody wars, and Ikei demons populate the surface of the planet. In the middle of the wasteland stands the Nerve Tower. Nobody knows what it is: the symbol of evil or the final hope …