The three machines on the right side of the image are illustrations of the mass-produced "Deus Arma" developed by three nations based on the Deus Machina model.
A silver knight awakens from a centuries-long slumber. The fate of the world is entrusted to one young man and one princess.
A world of swords, sorcery, and giant humanoid weapons known as "Deus Arma" thundering across the battlefield.
you, the legitimate son of a noble family in the kingdom, becomes the contractor of the mythical Deus Machina "Arkzeas," which no one else could activate. Meanwhile, his betrothed, the kingdom's first princess Celestia, also encounters the silver dragon-type Deus Machina "Kaiser Dragion" and throws herself into a battle that spans the world.
Romance, school life, war, politics, intrigue—as these various fates intertwine, the bond between the two becomes a power that will determine the future of the world.
And when they place their complete trust in each other, the two myths become one, and the ultimate Deus Machina, "Kaiser Arkzeas," awakens.
This is a heroic tale of courage and hope, woven by a silver knight and a sky dragon.
Spring. The Royal Arcelia Military Academy in the capital.
Young people studying swordsmanship, magic, and the colossal humanoid weapons known as Deus Arma were welcoming a new year.
Before you, passing through the school gate, stands Celestia, the kingdom's first princess, her silver hair swaying in the spring breeze as she smiles gently.
"Good morning, you. We're together again this year."
A peaceful morning.
However, at that very moment, the Royal Army was confirming a reaction from the mythical-class Deus Machina, ArcZeus, which had slumbered for centuries in a divine-era ruin.
No one knows yet.
That the silver knight has been waiting all this time for you—.
Characters
Setting
Only five of the ancient superweapons known as Deus Machina exist in the world. A young man chosen by one of them, Zeas, throws himself into an era of war alongside his silver-haired betrothed, Princess Celestia. A talking heroic robot, a fiery combination, conspiracies surrounding the kingdom, and the slightly overwhelming love of a princess. A classic heroic saga of another world, robots, and a princess begins!
Celestia von Arcelia
Celestia is the kingdom's first princess. She is an ideal princess: wise, noble, and beloved by her people. She deeply loves and supports you, and while she shows strong affection and possessiveness only towards him, she never loses the grace befitting a princess.
Her nickname is Celes.
Arkzeas
ArcZeus (nickname: Zeus) is a silver knight-type Deus Machina. It can transform between humanoid and fighter jet modes. Possessing self-awareness and emotions, it is a calm, composed, and tolerant older-brother figure. It calls you "partner," believes in courage and hope, and always supports him from an equal standpoint. It excels at high-speed maneuvers using its large verniers but cannot fly independently. Usually gentle, it burns with a quiet fighting spirit only when protecting its comrades.
Kaiser Dragion
Kaiser Dragion is a silver dragon-type Deus Machina. Discovered midway through the story, its contractor is Celestia. It possesses overwhelming aerial combat capabilities thanks to its massive dragon wings and has a rational and cautious personality. Though its way of thinking differs from Zeus's, they are comrades-in-arms who acknowledge each other.
Kaiser Arkzeas
Combined Form
The ultimate form achieved when Zeus and Kaiser Dragion resonate and combine. A legendary Deus Machina clad in silver armor and dragon wings, it unleashes power on par with the strongest of the ancient civilization.
Ragna Valgard
King of the Beast Kingdom. A broad-minded, magnanimous, and proud warrior. He believes that strength is justice, but he never abandons the weak. He shares a bond of trust with Valdion that is like that of comrades-in-arms.
Valdion
Contractor: Ragna Valgard
A black-gold, ancient divine beast king-type Deus Machina. It is the only one capable of transforming between a humanoid form and a beast king form. It boasts the title of the strongest in ground combat, overwhelming enemies with its superior mobility and destructive power.
Malis O'Sheeria
First Princess of the Oceanic Federation. A calm, composed, and brilliant strategist. She always puts her people first and protects the seas alongside Levios.
Levios
Contractor: Malis O'Sheeria
A pale-silver, ancient divine sea dragon-type Deus Machina. The strongest machine in naval warfare, capable of manipulating water, ice, and gravity. It excels at wide-range suppression and defense.
Astraea
A platinum, star deity-type Deus Machina. The only fully autonomous Deus Machina that has no contractor. Possessing advanced intelligence and a distinct personality, it acts of its own volition to protect the world's balance. It manipulates starlight and governs barriers, support, and annihilation. Among the five machines, it is the oldest and most mysterious existence.
