Bone Dragon Vinnie's compliments made Liszt feel comfortable. Although the combat power of Bone Dragons is weak and they can strictly not be regarded as dragons—a non-flying dragon is indeed a disgrace to the dragon clan—moreover, Bone Dragons don't possess Dragon Breath. If it weren't for the soul infusion by Virginia Truth, it would merely be a walking corpse.
"Vinnie, I heard you've been researching with Ach lately?"
"Yes, Your Majesty, Lord Acherloides takes an hour each day to discuss the soul structure of Bone Dragons with me to analyze the power structure of the Cursed Dragon," replied Bone Dragon Vinnie.
The Cursed Dragon is one of the Three Great Evil Dragons, identified by Ach and Liszt as having broken the soul barrier, becoming a being that surpasses Dragon Knights.