Hmm...it seems you're the only one for the job. Colonel Alba gave me this sword made from Glass Crystals and her personal badge before I left for the field. Cahan takes out a bag.
Colonel Alba says that if I use her badge inside the Beastman Camp to declare war on Wraith King Dinor, I can draw him out. If you're able to pierce him with this Glass Sword, you can nullify his undead powers and truly kill him!