Akumajō Dracula: Yami no Juin - Fukushū no Jokyoku (悪魔城ドラキュラ 闇の呪印 -復讐の序曲-? lit. "Demon Castle Dracula: Curse of Darkness -Prelude to Revenge-") is a promotional item that was included as a preorder bonus for the 2008 PlayStation 2 game Castlevania: Curse of Darkness in Japan. It features a promo CD and a comic booklet.
The music was composed by Michiru Yamane and is exactly the same as that from Castlevania: Curse of Darkness Original Soundtrack, except for track 4, which is an arranged medley of the background music played during Zead's events ("Devil Forging" and "Confrontation -the Second-"), with an exclusive theme that does not appear in the game or the soundtrack.
- "Baljhet Mountains" - Background music for Baljhet Mountains (featured as track 9 on Disc 1 of the Original Soundtrack).
- "Garibaldi Cathedral" - Background music for the stained glass (featured as track 17 on Disc 1 of the Original Soundtrack).
- "The Legendary Belmondo" - Background music for the battle against Trevor Belmont (featured as track 15 on Disc 1 of the Original Soundtrack).
- "The Portrait of Zead" - An arrangement of the background music played during Zead's events.
The booklet features a comic; the story and artworks were designed by Ayami Kojima and functions as a prelude to the story of Castlevania: Curse of Darkness, narrating the tale of Hector's betrayal of Dracula, his love for Rosalee, Isaac's descent into madness, and Trevor Belmont's growing concern that Dracula could still be alive.
- Castlevania: Curse of Darkness
- Castlevania: Curse of Darkness Promo Soundtrack
- Castlevania: Curse of Darkness Original Soundtrack
- Vampire Killer Translation Page - Contains a full English translation of the comic