Season 1
13 episodes · Jul 6, 2025
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S1E1My First Mineral Hunt
Jul 6, 202524mHigh school girl Ruri meets graduate student Nagi while collecting minerals in the mountains.
S1E2The Value of Golden Color
Jul 13, 202524mRuri is determined to find gold, but Nagi explains that it might not be as likely as she hopes.
S1E3The Lost Planet
Jul 20, 202524mRuri meets Nagi's colleague Imari, and the three embark on a journey to find a lost mine.
S1E4Study of Sands
Jul 27, 202524mIn search of sapphire, Nagi teaches Ruri how to study sand, but Ruri prefers to hunt on a bigger scale.
S1E5Worlds Seen and Unseen
Aug 3, 202524mRuri, Nagi, and Imari head to the beach in search of agate, and Ruri learns about the long lifecycle of rocks.
S1E6A Closer Look into the Blue
Aug 10, 202524mJust as the group begins searching for sapphire on foot, Ruri uncovers a grave mistake that halts their plans.
S1E7Seaside Recycling Studio
Aug 17, 202524mRuri finds sea glass on the beach and runs into her classmate Shoko, who has a secret passion for minerals.
S1E8The Golden Elegy
Aug 24, 202524mRuri teams up with Shoko for a science project, which takes a turn when they discover a strange, orange rock.
S1E9Time Capsule of 1.9 Million Tons
Aug 31, 202524mRuri and Nagi head out to hunt for opals but discover that the area has already been fully excavated.
S1E10Sentence to an Abandoned Railroad
Sep 7, 202524mImari leads a hunt for manganese ore, when the group encounters a mystery along abandoned railroad tracks.
S1E11The Sapphire Cradle
Sep 14, 202524mWhen Ruri has trouble deciding on her future, she turns to her study of sapphire.
S1E12Memories Come with Rocks and Noise
Sep 21, 202524mWhen Ruri discovers her grandpa's old crystal radio, she's determined to restore it.
S1E13Look Up, Examine, Search! And Next!
Sep 28, 202524mRuri, Shoko, Nagi, and Imari take a trip together, where they search for meteorite at a hot springs inn.