Hunt Merkbees around OvervoldFarm to collect Pieces of Caelium. Take these to Merchant Hernan at Overvold Farm. Use your quest tracker to see your progress.
Merchant Hernan: Have you heard about caelium, NakanoAzusa? NakanoAzusa: I've never seen any, but I've heard of it. It's also NakanoAzusa: called "blue metal," right? Merchant Hernan: Yes and it is vital for us. Caelium is one of the Merchant Hernan: reasons why Lakia stays in the sky. It can also be used to Merchant Hernan: enhance armor, weapons and other goods. NakanoAzusa: I see. Merchant Hernan: That weapon also has caelium in it. This mineral Merchant Hernan: can imbue your weapons with magic or alchemy. NakanoAzusa: My weapon contains caelium? Merchant Hernan: Yes. Caelium comes from Aika. After the Zereca Merchant Hernan: were sealed, Aika used her remaining power for Merchant Hernan: mankind. This took the form of caelium, which is Merchant Hernan: found throughout the land. It is found in all living Merchant Hernan: things. NakanoAzusa: In humans as well? Merchant Hernan: Yes. It's contained in the blood of humans and Merchant Hernan: monsters. Would you like see for yourself? Monsters Merchant Hernan: such as merkbees should have caelium in the form of Merchant Hernan: powder. Use this separator to extract the caelium Merchant Hernan: from some merkbees.
Reminder Dialog
Merchant Hernan: Not all merkbees have the same amount of caelium. Merchant Hernan: Some don't even have enough to collect. Keep Merchant Hernan: looking, though, and you'll have enough soon!