To counter the mighty empires and other great powers, "Sky Striker" was developed using advanced military technology.Its power was such that it could instantly change the course of a battle.Ray, the girl entrusted with "Sky Striker," repeatedly encounters Rose, a girl from an enemy country with equal power, on the battlefield.With each clash of "Sky Striker," Ray gradually catches a glimpse of the "human heart" deep within Rose's mind, and she rises up to liberate her!To meet Rose not as a "weapon," but as a "person"—

Rose, the girl from the Empire, couldn't understand it. She couldn't understandwhy Ray, the girl who was coming towards her not to destroy her, but to save her, even though Ray was supposed to be her enemy. Every time Rose and Ray exchanged blows with their "Sky Blades," Rose felt something warm and indescribable from her. Seeing through Rose's doubts, the Empire absorbed her into the Flash Art weapon, Sieg.Having become a part of Zeke and lost consciousness, what thoughts are going through Rose's mind as Ray heads straight towards her?

In the isolated land, at its far north lies the "Dogmatika," a religious nationwhose people were blessed with the "Holy Mark" by their leader, Maximus. The nation, governed by his teachings, held an unshakeable position.On that day, the one who received the blessing from the leader was Ecclesia, the "purest saint" in history, the only one to bear the Holy Mark on her forehead.After the festival, Ecclesia, along with the previous saint, Fleurdelis, looked towards the future, when suddenly the sky over Dogmatika split open.From within emerged a beast that existed only in legend—a "dragon."Amidst the flames of war, a boy who has fallen like a dragon and a wary girl meet. Their encounter now marks the beginning of a white tale.