Only the chosen warriors known as Vessels of Heroic Blood possess the ability to turn their own blood into weapons known as blood armaments.
First Chihiro, then his friend Kotetsu awaken as Vessels of Heroic Blood. And who are these people who keep transforming innocent people into monsters?!
The Vessels who awakened one after another throughout the course of a fierce battle are taken to Maldeus Church.
Once they arrive, the mysteriuos girl Dux has something to tell them...
A chain of terrible events will begin,
 and humanity will sink into despair.
ستبدأ سلسلة من الأحداث الفظيعة 
وستغرق البشريّة في اليأس
Eine Kette schrecklicher Ereignisse wird geschehen
und die Menschheit wird in Verzweiflung versinken.
Una cadena de eventos negativos
empezará y la humanidad desesperará.
Una cadena de eventos negativos
empezará y la humanidad desesperará.
avrà inizio una catena di disgrazie,
e la gente sprofonderà nella disperazione...
Uma corrente de efeitos negativos começará
e a humanidade entrará em desespero.
Начнётся цепочка ужасных событий,
и человечество утонет в отчаянии.