D.D.D.

Synopsis

The kingdom of Garlonia has seen its military power grow significantly since the establishment of the Black Knight Squadron, leading to increased prosperity. In the slums of Garlonia, Julius and his twin brother Michael live in poverty. Julius, aspiring to be a powerful warrior like his father, dreams of joining the esteemed Black Knight Squadron to uplift his family. An extraordinary entrance exam provides him with an opportunity. During the trial, Julius discovers that the Black Knights, heralded as heroes, are in fact demonic beings known as "Devil Devices." He then undergoes a strange transformation, with a demon taking possession of his left hand.