Forum SettingsEpisode Information
Forums
New
What did you think of this episode?
DO NOT discuss the source material beyond this episode. If you want to discuss future events or theories, please use separate threads.
DO NOT ask where to watch/download this episode or give links to copyrighted, non-fair use material.
DO NOT troll/bait/harass/abuse other users for liking or disliking the series/characters.
DO read the Anime Discussion Rules and Site & Forum Guidelines.
Pages (2) [1] 2 »
Sep 14, 2025 5:27 AM
#1

Offline
Nov 2011
131318
It's ok Ruri. It's not easy for anyone to plan their future ahead.

This episode's feature is sapphire which has been a common type of gem in this type of show. Ruri is such an adventurer though. You just always expect her to be on the lookout for anything related to her interests.
Sep 14, 2025 7:10 AM
#2

Offline
Mar 2021
3324
Really Happy to see Ruri managed to find more sapphire I personally think she would make an amazing researcher.
Sep 14, 2025 7:21 AM
#3

Offline
Feb 2019
12478
“I love pretty rocks” I’m so proud of Ruri realizing she wants to become a mineralogist/researcher! It’s all thanks to mentorship Nagi and Imari have provided! You never know the impact you can have on a young person’s life! Becoming a scientist doesn’t require genius IQ, just a passion for learning.

The last two episodes giving Imari leadership experience is really cool. Nagi is great, but Imari coming into her own as a mentor to the girls is really sweet and she brings her own unique methods and expertise to these rock hunting seasons. Seto and Ruri are so lucky because they’re basically getting an entry level university mineralogy course in high school for free lol.

So today, I learned about rock slates and host rocks. Finding the host rock is really cool because it gives you insight into the world that particular gem was born into. The visualisation of Ruri connecting with the host rock and learning its story is so beautiful. Rocks really are a window into the past of the planet and tell the story of us! Even though they’re millions and billions of years old, learning about the past can help us understand the present and give us insight about the future.m

Great episode and a great message. Science belongs to all of us. It’s not something that only the rich and genius have a monopoly on. Go out, explore this beautiful world we have. Everything you see around you is your laboratory.
Marinate1016Sep 14, 2025 12:20 PM
Sep 14, 2025 7:23 AM
#4

Offline
Mar 2018
2543
i love ruri's development. im glad even she realizes that she has changed over her time with nagi, imari, and seto. this was basically her expidetation, so to speak, like how last week was imari.
Sep 14, 2025 7:52 AM
#5

Offline
Jan 2024
121
It has already been said a million times, but I really can't stress it enough: This anime is simply stunning.
"Tarapia tapioco! Brematurata la supercazzola, o scherziamo?"

"see you in the summer
somewhere."
Sep 14, 2025 7:58 AM
#6

Offline
Feb 2014
2321
I hope that in these last two episodes we get more of Nagi, she was basically absent from episodes 10 and 11.
Sep 14, 2025 8:47 AM
#7

Offline
Jul 2021
362
Honestly, watching Ruri's gradually develop a deeper interest and passion on minerals (sapphire specifically) is always amusing to watch, but this episode especially makes me adore her and this anime even more
YN_ONSep 14, 2025 8:54 AM
Sep 14, 2025 10:49 AM
#8
Offline
Jul 2023
140
good development of Ruri, but I expect more from Nagi in the next episodes
Sep 14, 2025 10:52 AM
#9
Offline
Jul 2024
5908
This girl is going to file a claim, open a gem mine, and become VERY rich. LOL
Sep 14, 2025 11:11 AM
Offline
Sep 2015
9187
This anime describe Nagi as grad student and Yoko as 4th year undergrad student, but to have such a high degree of freedom in their study it'd be more reasonable to make Nagi a postdoc while Yoko a PhD candidate.
Sep 14, 2025 11:45 AM
A sandwich

Offline
Jul 2020
2431
I'm guessing Ruri really doesn't see herself as a reasercher while still doing research in her own terms. In her pursuit of "pretty rocks" her curiosity and sometimes vanity has led us to think the journey for sapphire was over when further questions were still lingering in the air and she was sure she'd continue down this path in order to answer them.

This was yet another emotionally packed episode with some great animation and a motivating message for all of us who love science. Every week I'm liking this more and more.
⠓⠥⠍⠁⠝⠊⠞⠽ ⠞⠓⠗⠕⠥⠛⠓ ⠎⠕⠍⠑ ⠎⠞⠥⠏⠊⠙⠊⠞⠽⠂ ⠎⠕⠍⠑ ⠺⠊⠇⠇ ⠎⠅⠊⠏ ⠺⠁⠎⠓⠊⠝⠛ ⠞⠓⠑⠊⠗ ⠓⠁⠝⠙⠎ ⠁⠝⠙ ⠑⠝⠙ ⠥⠏ ⠗⠥⠊⠝⠊⠝⠛ ⠊
⠞ ⠋⠕⠗ ⠑⠧⠑⠗⠽⠕⠝⠑
⠎⠓⠊⠊⠅⠕ ⠁⠕⠎⠕⠊⠂ ⠼⠃⠼⠚⠼⠁⠼⠓
Sep 14, 2025 12:13 PM

Offline
Feb 2007
6749
Dragon found. ^_^
Sep 14, 2025 12:19 PM

Offline
Feb 2019
12478
curvedtree said:
I hope that in these last two episodes we get more of Nagi, she was basically absent from episodes 10 and 11.

I mean you had 9 episodes of her lol. These were to develop Imari.
Sep 14, 2025 12:20 PM

Offline
Feb 2019
12478
phantomfandom said:
This anime describe Nagi as grad student and Yoko as 4th year undergrad student, but to have such a high degree of freedom in their study it'd be more reasonable to make Nagi a postdoc while Yoko a PhD candidate.

PhD students have a lot of freedom too(I am one) especially in stem if she’s nearing the end she’s probably done with most of her course requirements and could be working on her dissertation/publications which explains why she’s at conferences.
Sep 14, 2025 1:01 PM

Offline
Apr 2012
24769
Reply to Marinate1016
phantomfandom said:
This anime describe Nagi as grad student and Yoko as 4th year undergrad student, but to have such a high degree of freedom in their study it'd be more reasonable to make Nagi a postdoc while Yoko a PhD candidate.

PhD students have a lot of freedom too(I am one) especially in stem if she’s nearing the end she’s probably done with most of her course requirements and could be working on her dissertation/publications which explains why she’s at conferences.
@Marinate1016 Are you involved in natural sciences? I apologize if I used the English version incorrectly.
Sep 14, 2025 1:36 PM

Offline
Mar 2024
176
I hope Nagi spent the time she got off these last few episodes buying some clothes in the next size up. I'm worried she can't breathe.
Sep 14, 2025 2:22 PM

Offline
Feb 2014
2321
Reply to Marinate1016
curvedtree said:
I hope that in these last two episodes we get more of Nagi, she was basically absent from episodes 10 and 11.

I mean you had 9 episodes of her lol. These were to develop Imari.
@Marinate1016 when people correct me with logic


Seriously though, I feel like Ruri, I understand Imari's appeal, but I just prefer Nagi.
Sep 14, 2025 2:29 PM

Offline
Apr 2020
2261
Reply to curvedtree
I hope that in these last two episodes we get more of Nagi, she was basically absent from episodes 10 and 11.
@curvedtree I agree, I like all the girls but Nagi is simply stunning, glad she appeared in the end.
Imagine how boring this world would be without Japan - a comment at youtube
Sep 14, 2025 2:35 PM

Offline
Feb 2019
12478
curvedtree said:
@Marinate1016 when people correct me with logic


Seriously though, I feel like Ruri, I understand Imari's appeal, but I just prefer Nagi.

I mean yea she’s obviously a great character and gorgeous, but you don’t want Imari to just be a cardboard cutout. There’s only like 4 main characters in this series so it’s important they’re all well developed. Plus, given she’s a PhD student it makes sense she’s away and not just spending all her time with the girls. I’m sure the last couple episodes will have a lot of time with her.
Sep 14, 2025 2:37 PM

Offline
Feb 2019
12478
RobertBobert said:
@Marinate1016 Are you involved in natural sciences? I apologize if I used the English version incorrectly.

I’m in political science
Sep 14, 2025 2:47 PM

Offline
Feb 2014
2321
Reply to Marinate1016
curvedtree said:
@Marinate1016 when people correct me with logic


Seriously though, I feel like Ruri, I understand Imari's appeal, but I just prefer Nagi.

I mean yea she’s obviously a great character and gorgeous, but you don’t want Imari to just be a cardboard cutout. There’s only like 4 main characters in this series so it’s important they’re all well developed. Plus, given she’s a PhD student it makes sense she’s away and not just spending all her time with the girls. I’m sure the last couple episodes will have a lot of time with her.
@Marinate1016
Marinate1016 said:
given she’s a PhD student


When we are told that though? Because the manga points out she is a graduate.
Sep 14, 2025 2:48 PM

Offline
Feb 2019
12478
curvedtree said:
@Marinate1016
Marinate1016 said:
given she’s a PhD student


When we are told that though? Because the manga points out she is a graduate.

Doctoral studies are graduate… grad school is master’s and PhD. People rarely get master’s in stem fields like mineralogy so common sense would just lead you to assume it’s a PhD. Master’s students don’t travel internationally for conferences either(usually)
Sep 14, 2025 2:51 PM

Offline
Feb 2014
2321
Reply to Marinate1016
curvedtree said:
@Marinate1016
Marinate1016 said:
given she’s a PhD student


When we are told that though? Because the manga points out she is a graduate.

Doctoral studies are graduate… grad school is master’s and PhD. People rarely get master’s in stem fields like mineralogy so common sense would just lead you to assume it’s a PhD. Master’s students don’t travel internationally for conferences either(usually)
@Marinate1016 A doctoral degree is a post-graduate and considering how the manga is based on the author's own mineralogy graduation, I don't see where you took this information that Nagi is in a Geology doctoral program.
Sep 14, 2025 3:02 PM

Offline
Feb 2019
12478
curvedtree said:
@Marinate1016 A doctoral degree is a post-graduate and considering how the manga is based on the author's own mineralogy graduation, I don't see where you took this information that Nagi is in a Geology doctoral program.

You’re playing semantics for no reason lmao. Graduate school offer postgraduate degrees. Literally Google any graduate program and you’ll see both. No one gets masters in mineralogy. You’re talking to someone in a doctoral program who’s got a masters, two actually. Respectfully I know what I’m talking about.

Postgraduate and graduate are used interchangeably. A google search would help you more. The term grad school refers to any post graduate, I.e after your undergraduate, degree.
Sep 14, 2025 3:12 PM

Offline
Apr 2012
2295
Does the story end on the 12th episode or does the manga still continue beyond that?


The gem of the season for me is Kaoruko Waguri
"Manga readers are annoying, all they do is complain or spoil the anime we discuss in an anime forum.
They should really do their whining at manga forums.


USERS ON MY IGNORED LIST:
RayReynolds - SSL443 - Dr4kon - Nerdanimefan1992 - ToTheMountains - Fiveskies
To add users to the Ignore list: (1) Go to Account settings (2) Click Forum tab and toggle down (3) Type or paste user name on entry box (4) Click Add and you're done.
Problem solved, you'll never have to see someone trolling ever again because their post will be closed/collapsed.
Sep 14, 2025 3:14 PM

Offline
Apr 2012
24769
Reply to Marinate1016
RobertBobert said:
@Marinate1016 Are you involved in natural sciences? I apologize if I used the English version incorrectly.

I’m in political science
@Marinate1016 Ah, I see. My city only recently opened a political science department, so I hadn't thought about it before. Well, now is a very good time for this research, good luck.
Sep 14, 2025 3:34 PM

Offline
Feb 2014
2321
Reply to Marinate1016
curvedtree said:
@Marinate1016 A doctoral degree is a post-graduate and considering how the manga is based on the author's own mineralogy graduation, I don't see where you took this information that Nagi is in a Geology doctoral program.

You’re playing semantics for no reason lmao. Graduate school offer postgraduate degrees. Literally Google any graduate program and you’ll see both. No one gets masters in mineralogy. You’re talking to someone in a doctoral program who’s got a masters, two actually. Respectfully I know what I’m talking about.

Postgraduate and graduate are used interchangeably. A google search would help you more. The term grad school refers to any post graduate, I.e after your undergraduate, degree.
@Marinate1016 You are just trolling me, I ask something (i.e.:
curvedtree said:
When we are told that though? Because the manga points out she is a graduate.
) and you move the goalposts. Besides, only the US uses "graduate" and "postgraduate" interchangeably. Best regards.
Sep 14, 2025 3:38 PM
Deadhead

Offline
Dec 2018
5708
Ngl, I think this was the episode where the most stuff went over my head, I rewinded a few times to try to understand certain parts but I had to give in and let the episode play, didn’t wanna be stuck on it for an hour lol, it’s definitely on me and not the show tho, it didn’t hurt the episode for me at all either. This one was especially good for the Ruri development, with Nagi gone she really went full researcher to find that host rock, and in the process she made another amazing discovery at the same place they originally found the sapphires, such a beautiful moment.

And one aspect that really shows Ruri’s growth is that the rock she was looking for was not a pretty one for once, and even Ruri herself noticed this, it’s kinda funny but once again, it really shows how she’s changed. And I really liked the last moments of the episode where it was revealed that Ruri wants to make the pretty rocks look even prettier, I think that’s a great way of looking at it for Ruri, she’s gonna make a fine mineralogist (if I’m getting the title right) if that’s the path she ends up choosing. Also, I was missing Nagi this episode but I got no issue with her taking a backseat for Imari to do some teaching, she’s proven herself at this point.
TheColonel76Sep 14, 2025 3:41 PM
Sep 14, 2025 3:44 PM

Offline
Dec 2011
286
What was Nagi trying to say when she stopped herself at the end of the episode?
Sep 14, 2025 3:45 PM
Offline
Nov 2024
8
This show keeps making me want to go into the woods to look for rocks, where I'd then have no idea what I was doing and probably fall in a hole. 😅
Sep 14, 2025 3:55 PM
Offline
Dec 2022
2895
just...peak. ah, Ruri, you're such a wonderful girl. good character development and the anime from her and Nagi was just heartwarming. ❤️
2 more episodes to go...
Sep 14, 2025 6:25 PM

Offline
Feb 2019
12478
curvedtree said:
@Marinate1016 You are just trolling me, I ask something (i.e.:
curvedtree said:
When we are told that though? Because the manga points out she is a graduate.
) and you move the goalposts. Besides, only the US uses "graduate" and "postgraduate" interchangeably. Best regards.

That’s objectively not true. I got my first master’s in Scotland lmao. Again please don’t try to compete with me on this. I’m in academia. It’s ok to be wrong sometimes. Just take the L, say ok and enjoy the rest of the show :)
Sep 14, 2025 7:00 PM
Offline
May 2017
2383
Reply to Janethan23
Does the story end on the 12th episode or does the manga still continue beyond that?


The gem of the season for me is Kaoruko Waguri
@Janethan23 Yes, Kaoruko is pretty and a girl to fall in love with... but Nagi is the woman Kaoruko may become.
Mene, mene, tekel, parsin
Sep 14, 2025 7:36 PM

Offline
May 2021
1350
Ruri "I am not a researcher" Tanigawa everyone :D
Sep 14, 2025 8:19 PM

Offline
Feb 2025
832
Ruri has a great future as a researcher, even tho she doesn't realize it yet lol

Imouto suki

Tsundere-Chuuni-Imoutos save me...

Sep 14, 2025 9:08 PM

Offline
Jul 2020
55
The core of the eleventh episode lies in two areas: the idea that science requires the initiative to find both questions and answers, and linking things together as parts of a system, and secondly, the fact that progress might not always be visible to those in the weeds. For this reason, it takes mentors and peers to help one to spot this. The journey to Ruri seeing that her interest in geology is legitimate, and her choice to take up an Earth Science option course, is a strong showing of this message.

Also, Master's students can and do travel for conferences. The linked article's author travelled to two different conferences during their time as a Master's student.
Sep 14, 2025 11:47 PM

Offline
Aug 2017
790
It's always hard to find the good way when you didn't even know where you start walking selriously, i'm happy for Ruri, she know where is she going now!
Sep 15, 2025 12:37 AM

Offline
Jun 2015
653
Oh wow, Ruri have come so far, she was basically leading that research, with all thanks to everything she learned from Nagi-san and Imari-san. So proud of her, she's already on the right track to become a researcher, even if she says she's still only doing it for the pretty rocks, I think that is a really good motivation.

Sep 15, 2025 7:23 AM
Offline
Oct 2020
36
Oy Vey Ruri shoulda put those tiny hats
Sep 15, 2025 11:15 AM
Shalltear

Offline
Apr 2018
36492
Of course Ruri would want to attend the geology course after that! That's so many sapphires, beautiful episode!
Sep 15, 2025 1:17 PM

Offline
Oct 2024
432
I could not stand Ruri at first with all her immaturity. But she had considerable character development and is by now quite likeable.
Sep 15, 2025 8:11 PM
Offline
Mar 2017
53
Second episode in a row with next to no Nagi. I'm going through withdrawal
Sep 16, 2025 4:51 AM

Offline
Oct 2023
439
Ruri would be an amazing surveyor. Her ability to track deposits down is impressive. It is great to see her coming to her own. What she calls "treasure hunting" is what corporations and states call incredibly useful. Having Nagi away is awkward but quite necessary to give Imari a chance to shine so I'm okay with it.
Sep 16, 2025 9:22 AM

Offline
Apr 2018
139
Reply to Chendroshee
What was Nagi trying to say when she stopped herself at the end of the episode?
@Chendroshee
Presumably she was going to reassure her that what she's done very much is research, since Ruri seems to believe she's not capable, or at least not the right type of person to be a researcher - not smart enough, not studious enough, not like everybody else in their fossicking group - and judges her work based on that, rather than its own merit. Like she said, everybody else is doing research, but she's just treasure hunting.
So I'm guessing Nagi was going to tell her that's not true, but got interrupted.
Sep 16, 2025 8:38 PM

Offline
Jul 2022
1550
Ruri has grown so much through her research. Everything she investigated, wrote, searched for, and discovered is a reflection of what was truly forming in her heart—and it eventually took shape as a defining moment in her life. Earth sciences have so many branches, and I wonder which one Ruri will choose—maybe Mineralogy, or another path that lets her keep witnessing what she loves so deeply. But what matters most today is that things are getting much more serious. Honestly, I’d never thought of Ruri that way before, but it’s only natural that she’s now someone more aware and mature.

What a stunning production—and what a beautiful frame they gave us of Nagi, glowing with joy as she sees Ruri recognizing not only her work, but the work of hundreds of others who study minerals.
Sep 17, 2025 12:34 AM
Offline
Feb 2021
343
You start to feel an anime's quality as it gets near the end and you realise how much you are going to miss it. I'm starting to feel like that now.
Hopefully it's not a sad ending, don't want nobody falling off any cliffs.
Sep 17, 2025 8:32 AM
Offline
Jan 2021
2
It was just beautiful seeing Ruri finally getting her Brain together
Sep 24, 2025 12:48 PM
Offline
Jan 2023
1160
Can really see the character development now, Ruri really has come a long way. She may not say she wants to become a researcher, but she's certainly on the path to doing so.

After watching this show so far, it is really making me wanna go outside and research rocks myself, it is so weird. Never thought I'd feel the urge to.
Sep 28, 2025 6:14 AM

Offline
Oct 2023
2192
So they actually teased the upcoming RuriDragon anime adaptation? *.*
Sep 28, 2025 11:00 PM
Offline
Aug 2024
45
Ruri finding a purpose in life. Wholesome to see!
Pages (2) [1] 2 »

More topics from this board

Poll: » Ruri no Houseki Episode 1 Discussion ( 1 2 3 4 )

Stark700 - Jul 6, 2025

155 by Redlinkkid »»
Jan 17, 12:03 AM

Poll: » Ruri no Houseki Episode 13 Discussion ( 1 2 3 )

Stark700 - Sep 28, 2025

104 by Joshhhp »»
Jan 13, 10:22 AM

Poll: » Ruri no Houseki Episode 7 Discussion ( 1 2 )

Stark700 - Aug 17, 2025

84 by oNephalem »»
Jan 6, 7:46 PM

Poll: » Ruri no Houseki Episode 12 Discussion ( 1 2 )

Stark700 - Sep 21, 2025

54 by FofWeeb »»
Dec 30, 2025 12:49 PM

Poll: » Ruri no Houseki Episode 3 Discussion ( 1 2 )

Stark700 - Jul 20, 2025

80 by SHALITAMARX15 »»
Dec 2, 2025 11:02 AM
It’s time to ditch the text file.
Keep track of your anime easily by creating your own list.
Sign Up Login