Oneira summary:

Coming out of the depths of our minds after a slow agony, nightmares have come to life. Driven by the sole desire to destroy their hosts, these monsters with their multiple forms have become a plague to be eradicated.Faced with this threat, the Holy See has founded the Epeira caste, which it erects as its armed wing, now the only ray of hope in a world of darkness.Arane took the oath to this order and became one of its most renowned members. The famous dream hunter known to all as the Boogeyman .