"Over 50 years of traversing the battlefields across the entire continent, I have never felt my impending demise more than now. If reinforcements fail to arrive tomorrow, our V Regiment will surely vanish from all military maps. Our Lady of Marna, grant us strength and good fortune to confront the Vanguard Centaurs. But if we must meet our end, I wish to return to the clear waters of Marna's mother, where all pain becomes a relic of my past life." - The tattered letter belongs to the commander of the Vth Regiment, the army of the Lorthwen Empire.

As the first research product of the dark magician Ursine Belwulf, the Vanguard Centaurs are the result of a cross between centaurs and earth elementals, bearing the mobile, mighty, and emotionless characteristics of both creatures. A Vanguard Centaur that only obeys its creator's orders and executes every request without a doubt, able to fight to the death without tiring. In the history of the hundred-year war, a group of more than thirty Vanguard Centaurs suddenly ambushed and destroyed the entire 5th army of the Lorthwen Empire, then retreated with only negligible losses, leaving mountains of corpses under their feet.