Lament of the Lamb, alternatively titled The Lament of a Lamb or Sheep's Song, is a Japanese horror manga series written and illustrated by Kei Toume. It follows Kazuna, a boy with a mysterious illness which turns out to be vampirism. It was adapted into a live action film in 2002 directed by Junji Hanado, a three-part Drama CD in 2002, 03, and an anime OVA series in 2003, 04.