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.