Ep. 4: Trio tersebut menyelidiki tambang kristal di mana Lent memastikan keamanan sementara Ryza mencari bijih langka dan Tao menganalisis lingkungan.

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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)