Civilization clings to scattered settlements across a barren wasteland where zeppelins carry the lifeblood of commerce through hostile skies. Sky pirates hunt these floating vessels relentlessly, leaving towns defenseless against aerial raiders who demand tribute or destruction. The Kotobuki Squadron exists to stop them: a crew of mercenary pilots who trade their lives for coin, strapping into nimble Ki-43 Hayabusa fighters to protect cargo convoys and remote outposts from annihilation. Kylie, Reona, Chika, Emma, Kate, and Zara live for the rush of combat at altitude. Banking through clouds, lining up shots on faster targets, pulling out of dives that test their aircraft's limits, these women know their profession demands split-second precision. One misjudged turn becomes wreckage falling to the earth. One delayed reaction ends in collision and fire. Yet they keep flying. The thrill of competition, the weight of protecting those below, the simple truth that they're better at this than anyone else: these reasons drive them higher. In a world where survival means staying airborne, the Kotobuki Squadron represents freedom itself.