The black market do exist but because of the forbidden goods that were sold, the merchants chose to stay in a hidden place located inside a mountain close to the Vampire City.
The Vampires had a lot of golds and treasures in possessions, so fairies and elves from the black market sneak into their empire to steal them.
Although many do not know this but the resources that were stolen from the vampires were the ones sold at the black market.
Sunny teleported herself with Kevin and the two girls to the entrance of the black market. The market was located inside a mountain but there was an entrance everyone was required to pass through before entering into the cave where the black market was.
There were guards stationed at the entrance of the market. But they were not weak. They possess forbidden spells and magics they could use to defeat any magical creature.
