Hollow ground

"The dungeon you are looking for is the Hollow Ground," the receptionist replied, puffing out a smoke ring.

Kaiser looked at the information on the paper she had given him.

"The Hollow Ground is a Ghost-type dungeon where Ghost-type monsters can be found. It is a Rank 2 dungeon, meaning monsters reaching Level 300 can be found inside."

"The main monsters there are Spirit Wraiths, with mini-bosses being Wraith Lords and the boss being a Wraith King."

"I wanted some monsters with thief-like skills," Kaiser said. "Not this type."

"From your Aura, I can see that you are a Necromancer. You probably need a thief-type undead for some stealth work, and thieves are the best at stealth, even better than assassins," she said.

"That's why I recommend this dungeon. Ghost-type undead are naturally good at stealth."

Kaiser looked at her for a moment before nodding.