Following the traces of Diva, the leader of the Chiroptera, Saya and her group make their way to Russia. But awaiting their arrival are Diva's powerful protector Chiroptera, " Chevalier." In the middle of the battle against this new threat, Saya is told a horrible truth - "It is because you are one of us." Is Saya a human, or something more sinister...? Contains 16 black and white illustrations from Blood + animated series designer Chizu Hashii.