How to Complete Bonga Bugle - Skyfrost
When you go to the quest location in Moorabella, choose the last option in the list when you are interviewed. The Head Editor says to go to the Ruins of Delgantua, so do that.
The objective is to protect the Head Editor and defeat all foes. Buffs are forbidden (but you will not break the law if an enemy unit causes you to gain a Buff).
You must fight five Viera. Don't forget to protect the Head Editor.