Kou Yamori is a 14-year-old boy who’s disillusioned with the monotony of daily life. He quits school and begins wandering the streets at night, searching for something—anything—that feels real. One evening, he meets Nazuna Nanakusa, a mysterious and playful vampire who introduces him to the thrill of the nocturnal world.
Nazuna reveals that becoming a vampire isn’t as simple as being bitten—you must first fall in love with the vampire who bites you. Intrigued by this strange rule and drawn to Nazuna’s chaotic charm, Kou sets out on a new mission: to fall in love with her and leave his human life behind.
As Kou dives deeper into the night, he meets other vampires, confronts emotional truths, and explores what it means to live freely. The series blends supernatural elements with introspective coming-of-age themes, all wrapped in neon-lit visuals and a lo-fi, dreamlike atmosphere.