A mysterious transfer student bearing the "Chains of Heaven" arrives at Kuoh Academy. In the labyrinth city of Orario, the Shadow King stirs from his ancient slumber. At Chiba's National High School for the Gifted, the heir to Sun Breathing swings his blade against overwhelming demonic forces. Three separate worlds. Three interwoven destinies. Three unforgettable sagas—each revealing tales of power, conflict, and transformation across extraordinary realities.