Fans of the surprisingly captivating science-adventure anime, Ruri Rocks (also known as Ruri no Hōseki or Introduction to Mineralogy), are eagerly anticipating the release of Episode 10. This unique series, which blends slice-of-life charm with an educational deep dive into the world of mineralogy, continues to unearth fascinating discoveries alongside its high school protagonist, Ruri Tanigawa. As the story progresses, the upcoming installment promises another intriguing expedition, this time to an abandoned railroad.
Release Date and Global Streaming Information for Ruri Rocks Episode 10
Ruri Rocks Episode 10 is scheduled to premiere in Japan on Sunday, September 7, 2025, at 9:30 PM JST. Viewers in Japan can catch the episode on various local television networks, including Tokyo MX, AT-X, BS11, ABC TV, and TV Aichi.
For international audiences, the episode will be available for streaming worldwide on Crunchyroll. In Southeast Asia, fans can also watch it on Aniplus Asia. Due to time zone differences, some regions may find the episode available on September 8, 2025. The exact global streaming times will vary, ensuring viewers across different continents can tune in to Ruri’s latest adventure.
Recapping Episode 9: A Dam’s Hidden Treasures
Episode 9 of Ruri Rocks presented an exciting turn of events, even for a series primarily focused on geology. Following a period of heavy rain, a local dam was forced to open, significantly altering the riverbed. Ruri and her friend Shouko, initially on the hunt for placer gold, stumbled upon something far more extraordinary: previously hidden opal deposits. This discovery, which Nagi and Imari soon joined to analyze, revealed opals that had been concealed for over two decades due to the dam’s presence, creating a “mineral nerd jackpot” for the team.
What to Expect in Episode 10: “Sentence to an Abandoned Railroad”
The title of the tenth episode, “Sentence to an Abandoned Railroad,” strongly suggests a new and perhaps industrial-themed mineral hunt. Ruri, Nagi, Shouko, and Imari are expected to venture into the surroundings of an abandoned railway, opening up possibilities for discovering unique geological formations or even various metals associated with railroad construction and the environment it creates.
Beyond the main mineral-hunting plot, Episode 10 is also anticipated to revisit the ongoing subplot concerning Ruri and Shouko’s project on water pollutants. This academic task could organically tie into their new discoveries along the abandoned railroad, adding another layer of scientific exploration to their journey. The episode is poised to maintain the series’ signature blend of scientific learning, character bonding, and comforting, slice-of-life vibes.
The Protagonists’ Continuing Geological Education
At its heart, Ruri Rocks follows high school student Ruri Tanigawa, whose initial fascination with jewelry evolves into a profound love for mineralogy after her encounter with Nagi Arato, a knowledgeable graduate student. Alongside her friends Shouko and Imari, Ruri embarks on various excursions, learning about geological formations and the properties of different minerals. These adventures not only deepen Ruri’s understanding of science but also foster her personal growth and appreciation for the natural world.
The Enduring Appeal of Ruri Rocks
Ruri Rocks, produced by Studio Bind, has quickly become a standout anime of the Summer 2025 season due to its refreshing and educational premise. The series masterfully transforms the niche subject of mineralogy into an engaging and accessible narrative. Its expressive animation beautifully renders natural landscapes and the intricate details of minerals, enhancing the viewer’s immersion.
The show’s slice-of-life approach, coupled with its emphasis on discovery and personal development, provides a calming yet captivating viewing experience, distinguishing it from more action-heavy anime. As Ruri and her friends delve into new locations and uncover more of the Earth’s hidden treasures, Ruri Rocks continues to offer a unique blend of scientific adventure and heartwarming storytelling.
Looking Ahead
As Ruri Rocks Episode 10 approaches, viewers can look forward to another enriching and visually appealing installment. With a promising new setting and the potential for exciting discoveries, Ruri’s journey into mineralogy remains as fascinating as the precious stones she seeks.
