The life of a boring salaryman-turned-vampire gets turned upside down by handsome coworker who's just dying for bite!A scrupulous vampire happy with his mundane life finds himself perpetually tested by his bored—and very unscrupulous—coworker. Office worker and 40-year-old virgin Minoru Sayo lives a simple, perhaps boring, life—at least until the day he is turned into a vampire. Meanwhile, his psychopathic junior colleague Yamadera is dead set on doing whatever it takes to become a vampire, including throwing himself in front of a train. Minoru jumps into action to protect him, but the damage to his body has a very unfortunate side effect—it further awakens his vampire instincts!