Dave mentioned something about the weapon to Angor before Angor went to fight Fox Master. However, there were not enough details. Angor only knew that Prome wanted his help for making a long-range alchemy weapon.
Since Angor asked, Prome revealed his idea right away. He needed a tiered long-range weapon which should be able to repel undead creatures.
"The request is from an old friend of mine. I still owe him a favor. I've tried to make many weapons without ever finding the right way, and half a year has already passed," said Prome as he sighed in frustration. "Synthesis has the best potential, but it requires great innovation and experience. I don't want to keep my friend waiting for any longer, and here's when your enchantment skills come in, young man."
