For centuries, twelve Guardians and the Knights who serve them have protected Mankind from the fearsome Keres, ancient creatures with a thirst for souls. However, a series of sudden and brutal attacks threatens the fragile peace between Realms. Now Hawk, a Knight who bows before no one, and Kira, a young inventor, find themselves in the eye of the storm and will have to rely on each other to navigate through decadent courts of intrigue and deceit... What do you think about this manga?