Taito wakes up one day and realizes the vampire whispering in his dreams actually saved his life, and now she's real, and now he's stuck in her world whether he likes it or not. The show treats its romantic setup like a genuine trap instead of a wish-fulfillment fantasy. What looks like a harem comedy about a guy getting attention from supernatural girls is actually about someone learning to want the person who chose him first, even when everything else is screaming louder.
Taito keeps slipping into vivid dreams about a mysterious female vampire who claims she's poisoned him. The line between sleep and waking blurs when he hears her voice in reality, but he dismisses it as exhaustion playing tricks. That changes the moment he survives a catastrophic accident that should have ended him. As Taito recovers, supernatural events spiral around him, and he discovers his dreams weren't fantasies at all. The vampire is real, his survival wasn't luck, and her poison has bound them together in ways he's only beginning to understand. Now caught between the human world and something far stranger, Taito must navigate his new existence while contending with the vampire's peculiar attachment to him, a growing circle of supernatural beings, and the romantic complications that emerge when death becomes optional. The series balances genuine tension with absurdist humor as Taito stumbles through impossible situations, trying to figure out what his new life actually means.