Soon after the Tuatha de Danaan's hijacking, Sousuke comes to the rescue of Kurz and Mao, who have infiltrated a Mafioso's mansion to track down the traitor responsible for putting the Tuatha de Danaan in danger. After being chased by Mafia thugs and three Arm Slaves, an unknown and technologically advanced AS appears. But who is piloting the black AS? Is it an enemy or an ally? What is the surprising truth that is about to make itself known to Sousuke and company?
Written by Shouji Gatou and Illustrated by Shikidouji.