Cirque Du Freak: The Manga, Vol. 7: Hunters of the Dusk

Setting out from Vampire Mountain, Darren embarks on a mission as part of an elite quartet sent to find the Vampanese Lord. Along their journey, though, they are imparted an ominous prophecy: "...If you have face the Vampaneze Lord four times and fail to kill him, only one of you will live to witness the fall of the vampire clan."