Special episode that got crowdfunded by Green Funding.

Kazuna's family has a history of suffering from a disease that creates an uncontrollable vampire-like thirst for blood. Knowing none of this, Kazuna was sent to live with the Eda couple as a child. As the sickness begins to show signs of being present within himself, he comes into contact with his older sister, Chizuna, who has been suffering from it since early childhood. Knowing that the sickness incurs a heavy weight upon those that suffer from it, Chizuna tries to ease her brother's burden, to help him learn to control his urges, but... (Source: ANN)

A music-video style recap OVA. This release covers episode 12-20 and is with classical music entirely except for one song right before the credits. The beginning also has a unique frosted boarder frame around the video that changes designs which was not present in the the first music recap nor in the original anime.

A music-video style recap OVA. This release covers episode 1-11. Some music used is full song versions with accompanied singing, other sections of the recap are entirely classical Austrian music.