July 6, 2025 • 24m
High school girl Ruri meets graduate student Nagi while collecting minerals in the mountains.
July 13, 2025 • 24m
Ruri is determined to find gold, but Nagi explains that it might not be as likely as she hopes.
July 20, 2025 • 24m
Ruri meets Nagi's colleague Imari, and the three embark on a journey to find a lost mine.
July 27, 2025 • 24m
In search of sapphire, Nagi teaches Ruri how to study sand, but Ruri prefers to hunt on a bigger scale.
August 3, 2025 • 24m
Ruri, Nagi, and Imari head to the beach in search of agate, and Ruri learns about the long lifecycle of rocks.
August 10, 2025 • 24m
Just as the group begins searching for sapphire on foot, Ruri uncovers a grave mistake that halts their plans.
August 17, 2025 • 24m
Ruri finds sea glass on the beach and runs into her classmate Shoko, who has a secret passion for minerals.
August 24, 2025 • 24m
Ruri teams up with Shoko for a science project, which takes a turn when they discover a strange, orange rock.
August 31, 2025 • 24m
Ruri and Nagi head out to hunt for opals but discover that the area has already been fully excavated.
September 7, 2025 • 24m
Imari leads a hunt for manganese ore, when the group encounters a mystery along abandoned railroad tracks.
September 14, 2025 • 24m
When Ruri has trouble deciding on her future, she turns to her study of sapphire.
September 21, 2025 • 24m
When Ruri discovers her grandpa's old crystal radio, she's determined to restore it.
September 28, 2025 • 24m
Ruri, Shoko, Nagi, and Imari take a trip together, where they search for meteorite at a hot springs inn.