Cross Summoner: R

After a final showdown with the Black Iron Mage, the human world and the various realms finally welcomed a brief time of peace.

Little was it known, however, that beneath this peace, darkness had already begun seeping in. Out of a selfish ambition for power, a group of humans began seeking immortality and placed their hope in a terrifying, taboo form of magic. As their understanding of this magic deepened, so did the chaos in the kingdoms of the various realms. From the Heavenly Realm to the Hellish Realm, none remained at peace. Creatures that should never have existed in the world poured forth and began wreaking havoc...

Who is the mastermind behind it all? Was all this destruction really caused by the wish for immortality? Or are there deeper secrets lying deep beneath it all, waiting to be discovered...