※The boy Kon doesn't know that the Black Dragon Heiron appears in the mountain where the wyverns live.
[Characters]
One-armed boy: The magic hunter Kon.
Middle-aged Woman: Kena. The leader of the magic hunter party Kon belongs to.
Mysterious Man: True Ancestor Ban. He's camouflaged his skin and hair color with magic. A vampire who doesn't lose to the sunlight.
Sir Trell: The former fourth place of Shiga Eight Swords. The person who challenged and lost to a lesser dragon.