Kujo Jotaro is a normal, popular Japanese high-schooler, until he thinks that he is possessed by a spirit, and locks himself in prison. After seeing his grandfather, Joseph Joestar, and fighting Joseph's friend Muhammad Abdul, Jotaro learns that the "Spirit" is actually Star Platinum, his Stand, or fighting energy given a semi-solid form. Later, his mother gains a Stand, and becomes sick. Jotaro learns that it is because the vampire Dio Brando has been revived 100 years after his defeat to Jonathan Joestar, Jotaro's great-great-grandfather. Jotaro decides to join Joseph and Abdul in a trip to Egypt to defeat Dio once and for all.

Set in modern day London, the story takes place in a world where "Shadows" are born from human fear and anxiety. A young girl arrives to study abroad, only to be caught in a bizarre incident as she enters university. In a city with no acquaintances, the helpless girl wanders into "Café Forbidden," a mysterious café that exclusively opens at midnight. She meets an assortment of handsome men employed at the café, where guardians who protect the boundary between humans and shadow convene. (Source: MAL News)

Vampires—supernatural beings that feed on the life essence of the unsuspecting at night—have been around for centuries. However, high schooler Karin Maaka is unusual, even among her own kind. Unlike her vampire family, ever since she was a child, Karin has suffered from polycythemia: a rare disorder which causes her to periodically produce excessive amounts of blood. And the more blood she produces, the more anemic and lightheaded she gets, ultimately leading to frequent nosebleeds. Her only solution? Force her excess blood onto random strangers, which surprisingly causes these "victims" to become livelier and happier than before. With her siblings—Anju, her reserved yet affectionate younger sister, and Ren, her womanizing elder brother—helping her abilities remain a secret by altering the affected humans' memories, no one is the wiser. That is, until Karin's newly transferred classmate, Kenta Usui, finds her behavior suspicious. And to make matters even more complicated, Karin feels her blood reacting unusually to Kenta's presence.

Mini OVA episodes bundled with the Blu-ray and DVD releases of Valkyrie Drive: Mermaid.