| (亡霊, Bōrei)
|Previous||Blue and Indigo|
|Episode||Shirogane no Ishi Argevollen: #14|
|Japanese||October 9, 2014|
In the frontier, an Arandas Army of elite soldier is annihilated thoroughly, since there are no witness testimonies about the attack, the unidentified enemy is referred to as a "ghost". Since the area had been attacked on multiple occasions, the 8th Autonomous Unit is sent in as another garrison. They are used as an early defensive unit to encounter and hold off the enemy. The enemy ends up being the Trail Krieger STURM ALPHA piloted by Schlein Richthofen, an Ingelmia ace pilot.