Etrian Odyssey Untold: The Millennium Girl/Weapons

Weapons are primarily sold in Shilleka's Goods, but they can also be found in treasure boxes and rewards from quests. In order for a weapon to be available, you have to sell specific materials listed in the Need column to Shilleka. This is a one time requirement except for Weapons highlighted yellow. They have a limited stock so you have sell additional materials in order to buy more.