The Value of Golden Color

2025-07-13

Ruri is determined to find gold, but Nagi explains that it might not be as likely as she hopes.

The Lost Planet

2025-07-20

Ruri meets Nagi's colleague Imari, and the three embark on a journey to find a lost mine.

Study of Sands

2025-07-27

In search of sapphire, Nagi teaches Ruri how to study sand, but Ruri prefers to hunt on a bigger scale.

Worlds Seen and Unseen

2025-08-03

Ruri, Nagi, and Imari head to the beach in search of agate, and Ruri learns about the long lifecycle of rocks.

A Closer Look into the Blue

2025-08-10

Just as the group begins searching for sapphire on foot, Ruri uncovers a grave mistake that halts their plans.

Seaside Recycling Studio

2025-08-17

Ruri finds sea glass on the beach and runs into her classmate Shoko, who has a secret passion for minerals.

The Golden Elegy

2025-08-24

Ruri teams up with Shoko for a science project, which takes a turn when they discover a strange, orange rock.

Time Capsule of 1.9 Million Tons

2025-08-31

Ruri and Nagi head out to hunt for opals but discover that the area has already been fully excavated.

Sentence to an Abandoned Railroad

2025-09-07

Imari leads a hunt for manganese ore, when the group encounters a mystery along abandoned railroad tracks.

The Sapphire Cradle

2025-09-14

When Ruri has trouble deciding on her future, she turns to her study of sapphire.

Memories Come with Rocks and Noise

2025-09-21

When Ruri discovers her grandpa's old crystal radio, she's determined to restore it.

Look Up, Examine, Search! And Next!

2025-09-28

Ruri, Shoko, Nagi, and Imari take a trip together, where they search for meteorite at a hot springs inn.