Yu-Gi-Oh! Card Game The Chronicles

In the isolated land, at its far north lies the "Dogmatika," a religious nation
whose 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.

A dragon suddenly appeared in the skies above the great nation of "Dogmatika," only to be slain by the knight "Fleurdelis," renowned as the "strongest saint."
Coincidentally, at the same time, soldiers from the enemy organization "Tri-Brigade" infiltrated Dogmatika territory.
"Shuraig," the leader of the Tri-Brigade, aiming to rescue prisoners, launched a surprise aerial attack alone to hold off Fleurdelis.
Meanwhile, "Ecclesia," the saint who rushed to the dragon's landing site, found a wounded boy. In an attempt to
save the boy, Ecclesia risked her life to stop the battle between the Dogmatika soldiers and the Tri-Brigade, but...

Saint Ecclesia receives punishment for shielding an injured boy.
The boy, desperate to save the suffering girl before his eyes, throws himself in front of her, absorbing the power of his surroundings and transforming once again into a dragon.
This prompts the Tri-Brigade, eager to rescue the prisoners, to take action, and the Dogmatika followers confront them in order to purge the infidels. The
ground becomes a chaotic battleground.
Far above, Shuraig attempts to hold back Fleurdelis, who is trying to rush to Ecclesia's side, with a desperate resolve.

Saint Ecclesia receives punishment for shielding an injured boy.
The boy, desperate to save the suffering girl before his eyes, throws himself in front of her, absorbing the power of his surroundings and transforming once again into a dragon.
This prompts the Tri-Brigade, eager to rescue the prisoners, to take action, and the Dogmatika followers confront them in order to purge the infidels. The
ground becomes a chaotic battleground.
Far above, Shuraig attempts to hold back Fleurdelis, who is trying to rush to Ecclesia's side, with a desperate resolve.

A desolate sandy sea stretches as far as the eye can see, bathed in golden light. Albus and Ecclesia deepen their bond as they make their way along a treacherous path.
Suddenly, mysterious flying objects attack them.
These beings, with soot souls and steel bodies, are the Spriggans, treasure hunters who make this vast sandy sea their base.
By chance, Albus and Ecclesia encounter the organization they were looking for, and at their base, the battleship Explorator, they meet Kit, the inventor sister of Felijit.
Ecclesia asks Sargus, the leader of the Spriggans introduced to her by Kit, to protect Albus.
Sargus then gives the two an unexpected task.

Having overcome their trials, Albus and Ecclesia are accepted as members of the Spriggans.
However, their joy is short-lived, as the earth suddenly trembles and the monstrous Serpent Duke Gorgonda, who reigns over the Great Sand Sea, appears.
The Spriggans and Ecclesia tremble at the sight of its colossal body that covers even the heavens. Furthermore, the wave of the brand emanating from Gorgonda's "Hole" causes Albus's power to run wild.
He devours the power of the Hole, transforming himself into the fiery red dragon, Albion. Driven mad
by the tremendous power emanating from each other, Albion and Gorgonda throw themselves into battle, drawing everyone around them into the fray.
Ecclesia rushes forward without regard for the danger in order to stop Albus.
In the midst of the flames of war, the dragon and the girl meet again. Their bond now raises the curtain on a new story.