An unaired OVA episode of Kore wa Zombie Desu ka? of the Dead. It is the 11th episode and was bundled with the sixth volume of the manga.

Taito has been really sleepy lately, and keeps dreaming of a female vampire who says she has given him her "poison." Sometimes he even thinks he hears her voice when he's awake. But after surviving an accident that should have killed him, Taito's world changes drastically and he realizes that his dreams are more real than he thought.

The Alzano Empire is home to one of the most distinguished magic schools in the world: the Alzano Imperial Magic Academy. Here, ambitious young students undergo training to become competent magicians. Sistine Fibel—a stern noble girl—and her bright-eyed best friend Rumia Tingel attend the Academy, determined to cultivate their magical skills. However, their world is thrown for a loop when their favorite teacher suddenly retires and the enigmatic Glenn Radars replaces him. His lazy and indifferent attitude toward life and magic quickly puts him at odds with his class. What's more, nefarious forces hidden within the empire's walls start to become active, and Sistine, Rumia, and Glenn find themselves caught up in their schemes. Rokudenashi Majutsu Koushi to Akashic Records follows Sistine, who is captivated by a mysterious floating Sky Castle; Rumia, who is haunted by a troubled past; and Glenn, who may be more than meets the eye. Though completely different on the surface, they are inexplicably bound together by a thread of fate. [Written by MAL Rewrite]

It looked like it would be a normal day for Ganta Igarashi and his classmates—they were preparing to go on a class field trip to a certain prison amusement park called Deadman Wonderland, where the convicts perform dangerous acts for the onlookers' amusement. However, Ganta's life is quickly turned upside down when his whole class gets massacred by a mysterious man in red. Framed for the incident and sentenced to death, Ganta is sent to the very jail he was supposed to visit. But Ganta's nightmare is only just beginning. The young protagonist is thrown into a world of sadistic inmates and enigmatic powers, to live in constant fear of the lethal collar placed around his neck that is slowed only by winning in the prison's deathly games. Ganta must bet his life to survive in a ruthless place where it isn't always easy to tell friend from foe, all while trying to find the mysterious "Red Man" and clear his name, in Deadman Wonderland. [Written by MAL Rewrite]