A magicless boy. Half a chain. A devil hunting him. At 7, Irav watched a devil kill his mother for her silver chain. She left him only half with a blue stone. At 17, he is the failure at Varnholt Magic Academy. When a demonic gate opens, his chain awakens and releases Lumiera, a fairy spirit. His mother was a Chain Guardian. His lost brother holds the other half. To find his brother and avenge his mother, the weakest must become NAYRAX.