The Diabolik Lovers' oneshots follow the characters Kanato, Shuu, and Reiji as they interact with Yui Komori, a girl who struggles with spirit sightings and poltergeist encounters despite her optimistic outlook. Yui transfers to a night school for performers and celebs in her sophomore year of high school because of her dad's profession, where hearsay speculates that some of the students may be vampires. As a result, she ends up sharing a living space with the Sakamaki siblings.