In the summer of 2025, the anime "Ruri no Houseki" is quietly creating a boom.
This work, which combines beautiful minerals and human drama, has become a hot topic on social media since its broadcast began, and has attracted attention from anime fans both in Japan and abroad.
In this article, we will thoroughly explain the attractive characters of "Ruri no Houseki" in a ranking format. We have carefully summarized each character's personality, highlights, and voice actor information.
In addition, we will cover the world view of the work, the highlights of the animation, the reactions of overseas fans, and valuable interviews with the production staff.
This is the perfect guide for those who want to know more about their favorite characters or want to know their charms before watching.
Please read to the end and find your own "gemstone of your favorite character."
What is "Ruri no Jewel"? Overview of the work and its worldview
"Ruri no Houseki" is a new type of anime that combines mineral collecting with human drama. The original work is published by KADOKAWA's popular label "Harta Comics", and the announcement of the anime adaptation caused a big stir, especially on social media.
The story begins in modern-day Shibuya and spreads to natural collection spots all over the country. The protagonist, Ruri Tanigawa, encounters not just "stones," but a world of minerals filled with beauty and the romance of science. The process of her becoming fascinated by the depths of minerals together with graduate student Nagi Arato is carefully depicted.
Although the story is based on the theme of "mineralology," which at first glance seems academic, it is interwoven with the characters' relationships and growth dramas, making it immersive even for those without specialized knowledge.
What is particularly noteworthy is the "change in the perspective of observation" depicted throughout the work. There is a mysterious charm in the way that discovering the beauty of minerals hidden in ordinary scenery changes not only the characters' but even the viewers' values.
In addition, this work skillfully incorporates the contrast of"minerals = character's inner self. For example, Ruri's love of sparkly things is symbolized by transparent minerals such as crystal and lazuli.
In terms of genre, it is a new attempt at "youth ensemble drama x science romance x minerals x slice of life," andit is the title that is currently attracting the most attention in the anime industry as an "ambitious summer anime."
Anime Adaptation Information: Highlights of the 2025 Summer Anime
"Ruri no Houseki" is a hotly-anticipated work that is attracting particular attention among the 2025 summer anime. As soon as the anime adaptation was announced, it became a trend on social media, and it is attracting a lot of attention not only from mineral fans but also from anime fans in general.
The production is handled by Studio COMIX, known as a talented studio. In order to depict the delicate texture of the minerals, a fusion of the latest 3D rendering and hand-drawn animation has been introduced, and the scenes where the minerals shine as if they were real are spectacular.
The director is Fujii Shingo, who made a name for himself with "Blue and Glass Dream." In this work, the relationship between the characters is carefully depicted with the theme of "emotional fluctuations and connections through minerals." Director Fujii himself is interested in mineralogy, so the balance between academic reality and drama is exquisite.
Furthermore, the cast is also attracting attention. The protagonist Tanigawa Ruri is played by Nemoto Kyori, and the calm and intelligent graduate student Arato Nagi is played by Seto Masami, and the collaboration of talented voice actors adds depth to the work. In addition, the world view is further enhanced by the supporting cast, from young to veteran, such as Miyamoto Yume, Hayashi Saki, and Yamada Misuzu.
The series is scheduled to begin broadcasting nationwide in July 2025, and will be distributed on various apps, reaching out to a wide range of viewers, not just terrestrial TV but also subscription viewers. In addition, pre-orders for the first-run limited edition Blu-ray with bonuses and a mineral encyclopedia booklet have already started, and the development that connects anime and reality is also a point of interest.
This work, which can be called the "dark horse of summer anime," will deliver a "quiet emotion" and "intellectual excitement" that sets it apart from other works. This work, which has made the niche subject of minerals so attractive, is definitely a must-see title this season.
Overseas reactions and fan comments: Not only Japan but the world is paying attention
"Ruri no Houseki" is a work that is highly acclaimed not only in Japan but also by anime fans overseas. Immediately after the announcement of the anime adaptation, the topic spread mainly on English-speaking social media and forums, and on Twitter (X) and Reddit, posts using the hashtag "Ruri no Houseki" rapidly increased.
What attracted particular attention was the freshness of the theme of mineralogy and the beauty of the art style. Anime themed on natural sciences are popular overseas to a certain extent, but works that directly focus on "mineral collecting" like this one are very rare, and Western science and education YouTubers have quickly released review videos, attracting attention from many quarters.
Comments from overseas fans include the following:
"The depiction of crystals and garnets is like something from a museum. I'm amazed that an anime could depict minerals so intricately"
"It's not just a slice-of-life story. The interactions between the characters are full of deep meaning, and they quietly move you"
"Even though it's about science, it's not too difficult, and it makes you want to know more. I'm looking forward to the English translation!"
It has also attracted a lot of interest in Asia, and has already begun to build a fan base beyond borders, with anime review sites in Korea and Taiwan featuring it as "the most anticipated Japanese anime of the season."
The minerals and scientific terms that appear in the work are depicted realistically and accurately, which is another point that gives it credibility among international viewers. In addition, the portrayal of the protagonist Ruri's realistic emotions and growth is easy to empathize with across cultural differences, and is highly regarded as a universal drama.
In this way, Ruri no Houseki is not just a domestic hit, but is also expected to provide anime fans around the world with a new intellectual and moving experience.
Top 5 Popular Characters [Spoiler Alert]
Here we introduce the TOP 5 Most Popular Characters from "Ruri no Houseki", compiled based on SNS surveys, fan reviews, and sales trends of related goods. Please be careful if you want to avoid spoilers, as this article contains content that touches on the development of the story and the inner thoughts of the characters.
1st place: Tanigawa Ruri
Voice: Nemoto Kyori
The main character, a high school girl with a stronger "curiosity about minerals" than anyone else. Her bright, positive personality and straightforward passion have captured the hearts of many viewers.
The phrase "It's sparkling!" has become her signature phrase, and many fan arts have been posted on social media. Although she shows a selfish side, many people sympathize with her growing with each episode, and she ranked first with overwhelming support.
Voice: Seto Masami
A calm and collected female character who studies mineralogy in graduate school. She is like a "guide to the work" who tells Ruri about the charms of minerals and leads the viewers into the world of mineralogy.
Although she appears cool at first glance, her kindness, which allows her to respond gently to Ruri's eccentric behavior, is her charm, and she has earned high support from female fans as the "ideal older woman."
Third place: Imari Yoko
Voice: Miyamoto Yume
A knowledgeable fourth-year university student who belongs to the same research lab as Nagi. She is a character with an intellectual aura, with a true "researcher's temperament" as she pors over old books and mineral data.
On the other hand, her occasional naive remarks and absent-minded side have created a contrast that has earned her a core fan base. On social media, many people have commented that "Yoko's commentary parts are easy to understand!"
4th place: Seto Shoko
Voice: Hayashi Saki
Ruri's classmate, a serious class representative character. The unexpected fact that she collects minerals as a hobby caught the interest of viewers from the beginning of her appearance.
Although she is the type who does not show her emotions much, the gap between her personality and her sudden talkativeness when it comes to gathering is the reason for her popularity. In the story, she sometimes clashes with Ruri, and the contrasting character structure is also one of her charms.
5th place: Kasamaru Aoi
Voice: Yamada Misuzu
Ruri's childhood friend, a lively character who loves mountain climbing. Using her knowledge of the outdoors and her ability to act, she plays a role like the "behind the scenes" in mineral collecting.
His interactions with Ruri have many comedic elements, making him a soothing presence for viewers. Although he is usually joking around, many people were touched by his kindness in caring for his friends, which is why he ranked 5th.
Each character is full of charm, and it is a work where you will clearly have your own favorite character, even more so than the ranking. Finding your favorite character is also one way to enjoy "Ruri no Houseki."
Summary: Discover the charm of "Ruri no Houseki" through the character rankings
"Ruri no Houseki" is a work that carefully depicts the inner thoughts and relationships of the characters through the seemingly niche theme of minerals. The top 5 popular characters introduced this time have different personalities and charms that stand out, and it is clear that they have gained sympathy and support from many viewers.
The story woven by these characters is not just a school story or a science fiction story, but also a story about the dedication and growth of the main character, Nagi's intelligence and tolerance, Yoko's otaku nature and kindness, Shoko's contrasting charm, and Aoi's friendly energy. It is a one-of-a-kind youth drama that stands at the crossroads of people and nature, knowledge and emotion.
In addition, the reason this work has been so highly acclaimed is due to the strong commitment and passion of the production staff that supports the world of the work. The depiction of minerals, the subtleties of emotions, the stillness and movement of the direction - everything is carefully layered, creating a composition that gently moves the hearts of viewers.
Whether you're just starting to watch it or you're already hooked, we hope that you've rediscovered the charm of "Ruri no Houseki" through the character rankings.
If you haven't yet decided on your favorite character, please use the ranking as a reference and try to find your own "spiritual gem." You'll surely find hints there to help you enjoy the work more deeply.
