第 4 集: 三人組調查水晶礦坑，Lent確保安全，Ryza尋找稀有礦石，Tao分析環境。

4

Ryza, Lent and Tao are assigned to investigate a crystal mine off the island. Lent is in charge of keeping the team safe, while Ryza looks for a rare ore and Tao observes and analyzes the surroundings. But the mission - which appears to be simple - will teach the young adventurers hard lessons. (Source: Crunchyroll)