This post concerns an important event item and it may or may not contain spoilers [in this case the spoiler would be concerning game-play and not much on story]
Proceed at your own risk.
Dragon Key #3 - The Bronze Key
aka: The Amethyst Key and/or The Friendship Key
Description: This key is made of pure bronze. There's a perfect octagonal shaped amethyst stone in the center of its handle.
Quest: To acquire this key you will have to complete a chain quest. Similar to the chain quest on games like Zelda and Donkey Kong Country 3. You acquire a special item and then take it to an npc character that needs it that character then exchanges that item with another item and it goes right on until you reach the final character who gives you the key.