Defeat Cruel observation machine near Kakan dock and collect 5 Nucleus endodermis. Then talk to Camelot King at Epheso. This quest can only be cleared once a day.
Camelot King: You're looking for strong refrigerant? Hm... That's easy to get Camelot King: However, you can only make one refrigerant per day. HiiragiKagami: It's alright. Where can I get it? Camelot King: Dark Legion sent the Observers to monitor Traband's weather. Camelot King: It is a machine type that does not require any fuel. They Camelot King: get all their power from their nucleus. NakanoAzusa: I've seen them before. Camelot King: Yes. They're all around Kakan dock. If I have their Camelot King: nucleus, nucleii? I can make the refrigerant for you. HiiragiKagami: So, I have to bring the nucleus of an observer? Camelot King: Yes. However you can't just bring 'it'. You also need to keep the Camelot King: endodermis of the nucleus intact. They're very fragile. Bring me Camelot King: five of them to make the refrigerant. NakanoAzusa: Okay, I Will.
Reminder Dialog
Camelot King: They look simple. But be careful! They fire a devastating Camelot King: beam. Please be careful with the endodermis.