Conquest Chest (easy)
You can get this from Conquest (easy) merc operations.
D. Gwang Treasure Chest
A valuable treasure chest. You need a Dong Gwang Treasure Key to open it.
Seo Gwang Treasure Chest
A valuable treasure chest. You need a Seo Gwang Treasure Key to open it.
Seungryong Reward Chest
A chest found during an operation in the Valley of Seungryong.
Silver Treasure Chest
A silver decorated box that can be opened with a silver key.
Wooden Combat Zone Chest
A chest with valuable contents.