★ 7.9Episodes (13)
1. My First Mineral Hunt07/06/2025High school girl Ruri meets graduate student Nagi while collecting minerals in the mountains.
2. The Value of Golden Color07/13/2025Ruri is determined to find gold, but Nagi explains that it might not be as likely as she hopes.
3. The Lost Planet07/20/2025Ruri meets Nagi's colleague Imari, and the three embark on a journey to find a lost mine.
4. Study of Sands07/27/2025In search of sapphire, Nagi teaches Ruri how to study sand, but Ruri prefers to hunt on a bigger scale.
5. Worlds Seen and Unseen08/03/2025Ruri, Nagi, and Imari head to the beach in search of agate, and Ruri learns about the long lifecycle of rocks.
6. A Closer Look into the Blue08/10/2025Just as the group begins searching for sapphire on foot, Ruri uncovers a grave mistake that halts their plans.
7. Seaside Recycling Studio08/17/2025Ruri finds sea glass on the beach and runs into her classmate Shoko, who has a secret passion for minerals.
8. The Golden Elegy08/24/2025Ruri teams up with Shoko for a science project, which takes a turn when they discover a strange, orange rock.
9. Time Capsule of 1.9 Million Tons08/31/2025Ruri and Nagi head out to hunt for opals but discover that the area has already been fully excavated.
10. Sentence to an Abandoned Railroad09/07/2025Imari leads a hunt for manganese ore, when the group encounters a mystery along abandoned railroad tracks.
11. The Sapphire Cradle09/14/2025When Ruri has trouble deciding on her future, she turns to her study of sapphire.
12. Memories Come with Rocks and Noise09/21/2025When Ruri discovers her grandpa's old crystal radio, she's determined to restore it.
13. Look Up, Examine, Search! And Next!09/28/2025Ruri, Shoko, Nagi, and Imari take a trip together, where they search for meteorite at a hot springs inn.