Melphy does not have a normal shop, but there is a special shop that sells rare items on specific days of each month. Enter the Melphy stronghold on the right day of the month and at the right time to meet a shopkeeper and purchase the rare items.
It is usually best to begin your Area Investigation one day in advance. Most units cannot walk to Melphy fast enough to make it in time if you begin the Area Investigation on the exact day.
Ariosh is the only boss in the game that will leave their headquarters. It is possible, but difficult, to complete the mission without defeating Ariosh.
This map was ripped by Tropicon and originally uploaded to VGMaps.com. Used with permission. Most neutral encounter information was originally collected by Red Maw. Referenced with permission. Most enemy unit, shop, and stronghold information was originally collected by CyricZ. Referenced with permission.