Daphnella, a saint born as the 'vaccine program' inside a ruinous reverse-harem game. And the obsessed mad dogs clinging to her. "You are mine. Your body, your life, your abilities, even every single breath you take—all of it." Heizen, the crown prince half-driven mad by possessiveness. "What must I do for you to look my way? Should I tear off the heads of the Pope and the cardinals?" Vuereston, the leader of the Holy Knights who whispers depravity with a noble face. "Don't misunderstand. It's not like I'm worried about you or anything. So, who was the bastard that laid a hand on you?" Roxand, the hot-tempered young duke who barks at all hours. Trapped in restraints tightening like a snare, Daphnella desperately wished: That this damn world would just utterly perish. Right before her, a mysterious man harboring a black virus extends his hand. "I've finally found you, Daphnella." Beings that can never blend together. Yet fated that only they can recognize one another. Two people who met as a vaccine and a virus. "If I were to lock you away in paradise, would you follow me?" Is this man truly paradise? Or is he an endlessly cruel abyss? If I take your hand, just how far can I tear down this cursed world?