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Ruri Rocks (TV)

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Alternative title:
Introduction to Mineralogy
Ruri no Hōseki (Japanese)
瑠璃の宝石 (Japanese)
Objectionable content: Mild
Plot Summary: High school student Ruri is a girl who loves minerals and jewelry. One day, she meets mineralogy graduate student Nagi who pulls her into the world of mineralogy. (from manga)
Running time: 23 minutes
Vintage: 2025-07-06
Opening Theme:
"Hikari no Sumika" (光のすみか) by Rei Yasuda
Ending Theme:
"Sapphire" by Hana Hope
Reviews:
Ruri Rocks ‒ Episode 5 (Aug 4, 2025)
Ruri Rocks ‒ Episode 4 (Jul 28, 2025)
Ruri Rocks (Jul 15, 2025)
Press Release:
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Japanese staff
Japanese companies
Director: Shingo Fujii
Series Composition: Michiko Yokote
Unit Director: Yoshiyuki Takei (ED) 
Original creator: Keiichirō Shibuya
Character Design: Mayu Fujii
Art Director: Shunichirō Yoshihara
Chief Animation Director:
Kazuhiro Ōta
Mayu Fujii
Sound Director: Kōhei Yoshida
Director of Photography: Takuya Ogata

Art Setting: Kazushi Fujii
Assistant Director: Yasuhiko Akiyama
Color design: Makiko Doi
Editing: Yūji Oka
In-Between Animation: Sara Wallanowitz (Shin-Ei Animation Kobe Studio; ep 4)
Mineral Design: cluseller
Sound Effects: Takuya Hasegawa
Theme Song Arrangement:
Kengo Minamida (OP)
Kenji Tamai (OP)
Masanori Takumi (ED)
Theme Song Composition:
Kengo Ohama (OP)
Masanori Takumi (ED)
Theme Song Lyrics:
Mion Yano (ED)
Rei Yasuda (OP)
Theme Song Performance:
Hana Hope (ED)
Rei Yasuda (OP)
2nd Key Animation:
A-1 Pictures (ep 2)
A-1 Pictures Fukuoka Studio (eps 3, 5)
A-Real (ep 5)
Asahi Production (eps 2, 5)
C2C (ep 5)
Dōga Kōbō (eps 2-3)
Drive (ep 5)
PINE JAM (eps 2, 4-5)
ROLL2 (ep 2)
Studio Lings (ep 5)
SynergySP (ep 5)
WHITE FOX Izukōgen Studio (ep 5)
xenron (ep 5)
Yokohama Animation Lab (ep 5)
ZEXCS (ep 5)
Animation Production: Studio Bind
Background Art: Bihou, Inc. (OP; uncredited eps 1-5)
Finish Animation:
A-1 Pictures (eps 1, 3)
A-Real (ep 5)
ENGI (OP; eps 4-5)
FAI (eps 2-5)
GIANTY (ep 4)
Grain (OP; eps 1-3, 5)
Makria (OP)
Seven Seas (ep 2)
Shanghai Phantom (OP)
Studio Elle (ep 2)
Studio Lings (ep 1)
Studio Targe (ep 5)
xenron (ep 1)
In-Between Animation:
8 bit (ep 1)
A-1 Pictures (eps 1, 4-5)
A-1 Pictures Fukuoka Studio (eps 1, 4)
A-Real (ep 5)
Asahi Production (eps 1, 4)
AXsiZ (eps 3-4)
C2C (ep 4)
diomedéa (ep 5)
ENGI (OP; eps 3-5)
FAI (eps 2-5)
Gallop (eps 3-5)
GIANTY (ep 4)
Grain (OP; eps 1-5)
Lapin Track (ep 1)
lolroute (ep 4)
Makaria (OP)
MAPPA (ep 5)
NUT (eps 1, 3-4)
OLM (ep 1)
P.A. Works (ep 5)
PINE JAM (eps 3-4)
project No.9 (ep 5)
Seven Seas (ep 2)
Shanghai Phantom (OP)
Shin-Ei Animation Kobe Studio (ep 4)
Signal.MD (ep 1)
SILVER LINK. (ep 1)
Studio Bind (OP; eps 3-5)
Studio Lings (ep 1)
Studio PaTHoS (eps 2, 4)
TNK (ep 1)
Trigger (eps 1, 4-5)
Wit Studio (eps 1, 3)
xenron (ep 1)
ZEXCS (ep 4)
Key Animation: EMT Squared (ep 4)
Photography:
A-1 Pictures
MADBOX
Production: EGG FIRM
Sound Production: Bit Grooove Promotion
special effects: MADBOX
Japanese cast
Asami Seto as Nagi Arato
Miyari Nemoto as Ruri Tanigawa

Misuzu Yamada as Aoi Kasamaru
Saki Hayashi as Shōko Seto
Yume Miyamoto as Yōko Imari

Akira Koga as Announcer (ep 5)
Megumi Toyoguchi as Ruri's Mother (ep 1)
Nobuaki Kanemitsu as Announcer (ep 2)
English staff
English companies
(none)
Internet Streaming: Crunchyroll
English cast
(none)

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