Aired: 7/6/2025
High school girl Ruri meets graduate student Nagi while collecting minerals in the mountains.
Aired: 7/13/2025
Ruri is determined to find gold, but Nagi explains that it might not be as likely as she hopes.
Aired: 7/20/2025
Ruri meets Nagi's colleague Imari, and the three embark on a journey to find a lost mine.
Aired: 7/27/2025
In search of sapphire, Nagi teaches Ruri how to study sand, but Ruri prefers to hunt on a bigger scale.
Aired: 8/3/2025
Ruri, Nagi, and Imari head to the beach in search of agate, and Ruri learns about the long lifecycle of rocks.
Aired: 8/10/2025
Just as the group begins searching for sapphire on foot, Ruri uncovers a grave mistake that halts their plans.
Aired: 8/17/2025
Ruri finds sea glass on the beach and runs into her classmate Shoko, who has a secret passion for minerals.
Aired: 8/24/2025
Ruri teams up with Shoko for a science project, which takes a turn when they discover a strange, orange rock.
Aired: 8/31/2025
Ruri and Nagi head out to hunt for opals but discover that the area has already been fully excavated.
Aired: 9/7/2025
Aired: 9/14/2025
Aired: 9/21/2025
Aired: 9/28/2025
