Eighteen years ago, a prophecy emerged, stating that a lowly youth with a black ring would rewrite the rules of survival in the world of supernaturals. The sole surviving descendant of the “divine level,” Sugitsuki, lives as a lowly outcast wearing the black ring in the filthy exile lands. However, his peaceful existence is shattered when his identity is exposed, and superpowerful factions perceive him as a threat, sending assassination squads to hunt him down. At the same time, five supernaturals who have existed since childhood to protect Sugitsuki are summoned. They rush to the land of exile to protect the last descendant of the “divine level.” A battle between “rings” is about to begin!