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...
But once someone becomes 
a familiar, there's no going back.
لكن حالما يصبح شخص جنّياً مُرافقاً
فلا مجال للتراجع
Sobald jemand ein Vertrauter wurde,
gibt es kein Zurück.
Pero al volverse un familiar,
no hay vuelta atrás.
Pero al volverse un familiar,
no hay vuelta atrás.
Purtroppo, però, se diventano dei famigli
Mas quando você vira um
familiar, não há volta.
Но когда кто-то превращается
в фамильяра, он уже не станет прежним.