Raylain o Koeta Mukou ni

In the year 916 of the Redo Century, the Sils—a secluded race of winged beings—have long thrived in tranquility, hidden safely away from human civilization. Their unbroken peace is violently shattered when a powerful Empire emerges without warning, plunging their world into sudden peril. Amid the chaos, a young Sil named Neun is forced to flee his village alongside his childhood friend, Zehn. Pursued relentlessly by Imperial soldiers, the two struggle to survive, but their escape comes at a devastating cost. While shielding Neun during their flight, Zehn contracts a mysterious and debilitating affliction known as Doll Sickness. Desperate to save her, Neun continues their harrowing journey until they encounter Umikaze Kei, a fighter belonging to the Resistance Army opposing the Empire’s tyranny. Driven by the urgent need to find a cure for Zehn’s condition, Neun makes a life-altering decision: he enlists in the Resistance Army’s intelligence corps. Trading his sheltered past for the dangers of war, he marches toward the front lines, determined to uncover the truth behind Doll Sickness and protect the one who sacrificed everything for him.