Prince Jellal, once destined to be the king of Khansia, faced betrayal orchestrated by Prime Minister Jones. Framed for crimes he didn't commit, stripped of his title, and forced into exile, his journey took a dark turn. As he rises from the ashes, creating the enigmatic "The Nocturne", he harbors a burning desire for justice. But the real game begins when he joins the Foedus Corporation and encounters Eris Scarletti, harboring resentment for the loss of her brother in Jellal's service. Will Prince Jellal's pursuit of vengeance lead to redemption or plunge him deeper into the shadows?