Hitsuji no Uta

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)

Type: OVA
Rating: R - 17+ (violence & profanity)
Season: None None
Status: Finished Airing
Read more: MyAnimeList (MAL)
Studios: Madhouse
Genres: Drama Horror
Tags: based on a manga manga tragedy earth japan seinen asia drama plot continuity present horror vampire vampires melancholy siblings angst curse