

To save her imprisoned father and escape the godfather's forced marriage, bankrupt heiress Elena Vale seduces Adrian Black, the family's dangerous underboss, into a two-year contract marriage. Amid betrayal, assassins, and power struggles, Adrian's possessiveness grows. He learns the truth: seven years ago, Elena—not Serena—saved him from the library fire. After Serena's fraud arrest, Adrian tears up their contract, kneels, and offers a lifelong vow.

Cassius, a former top-tier bodyguard, retired to the countryside. After his family was persecuted by criminal forces, he wielded the Valerius family's supreme black card to settle scores with all his enemies. Standing side by side with Celine, the family head who admired him, he protected his loved ones and dismantled a transnational criminal network.

Arion Black was prophesied at birth as the "Anti-Magic Vessel"—the final piece to the Demon Lord's conquest. His parents died sealing the Demon Lord and entrusted him to Headmaster White, who abandoned eight-year-old Arion in the slums out of jealousy. Ten years later, the Queen summons all noble heirs back to the Academy. Arion returns, scorned by all—but nobody knows the seal on his power is crumbling. Anti-magic is awakening. And the Demon Lord's prison is cracking open.