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10 Must-See Websites for December! / 2025

iDID Media Editorial Department
iDID Media Editorial Department
2025.11.18

Hello, this is the iDID Media editorial team. It's already mid-November, and it's definitely getting cold. My hands are getting cold typing on the keyboard, and my MacBook is getting cold too. But at the same time, the end-of-year atmosphere is gradually starting to appear. iDID has an event coming up at the end of the year. We hope you all have a fun end of the year!
Now, this time we've updated our October site roundup article. This month's list includes some of the most talked-about sites. We hope you'll enjoy looking back at them at your leisure.

Then please!

1. KOKUYO | Let Curiosity Become a Life

The site as a whole is designed to stimulate curiosity!

KOKUYO is undergoing a corporate rebranding to coincide with its 120th anniversary, and mount is in charge of the website renewal. KOKUYO is known as a stationery manufacturer,This renewal features KOKUYO's first corporate message, "Cultivate Curiosity in Life," along with a visualization of the entire business.This website provides a unified worldview that allows you to understand KOKUYO's history, overall picture, and future.

The special website, which truly expresses the brand's worldview, features a "Campus Notebook" unfolding in 3D animation like a "pop-up book," visually representing the message "Cultivate curiosity in life." Interestingly, even on the top page, the "About Campus" content is placed alongside the corporate message.This means that the "modest world" of the Campus notebook and the "rich world" that represents Kokuyo's future exist side by side and are interconnected.The consistent worldview conveyed is truly evident: "Curiosity begins modestly, like writing something in a notebook, and eventually connects to a rich world."

Another point worth noting is how "Getting to Know Kokuyo" deconstructs so-called "corporate information" and re-edits it in an "emotional" way.I'm surprised that the various types of content aren't templated, but instead feature visual expressions that emphasize the unique characteristics of each area. But that's precisely where the curiosity and excitement are contained, isn't it?

The way Kokuyo is presented, with a focus slightly more on "experiential learning" than "information," yet without being solely focused on experience, strikes a good balance. I felt this approach to conveying corporate information holds great potential. It's also noteworthy that Torque was involved in the accessibility aspects, and the Korean creative agency DFY was involved in the design.

[KOKUYO Vol.1] Refreshing the image and embodying KOKUYO's true value. Website creation that connects a complex large organization with "a commitment to people" | mount inc.

How did mount achieve the rebranding to "One Kokuyo"? Behind the scenes of Kokuyo's new corporate website | Web Designing Web

Client: KOKUYO Co., Ltd.

Executive Creative Direction: Lim Jong-ho (mount inc.)
Creative Direction, Art Direction, Planning, Design: Masahiro Yonedo (mount inc.)
@masalive
Technical Direction, Development: Takeshiro Umezu (mount inc.)
Editing, Information Architect: Yuriko Horie (mount inc.)
Produced by: Ko Yoshida (mount inc.)
Project Management, Information Architect: Risa Kusumoto (mount inc.)
Special thanks: Kenji Okabe (mount inc.), Akari Yamashita (mount inc.), Han Yujun (mount inc.)
Development: Shinji Kobayashi (Maboroshi), Naoki Oide (Factial)
Project Management / Planning: Han Ju-ho (DFY), Seok Mi-soo (DFY)
Design: Lee Eun-bi (DFY), Kim Hyun-mo (DFY)
Yoon Ami (DFY), Kim Soyeon (DFY)
Development: Kim Cheol-jun (DFY), Oh Ha-neul (DFY),
Lee Jin-jae (DFY), Baek Min-kyung (DFY), Kim Jae-rim (DFY)
Accessibility Supervision:
Tetsuro Horie (Torque inc.), Takuya Sakaguchi (Torque inc.), Junya Kojima (Torque inc.), Yuhei Kamitaki (Torque inc.), Kazuyuki Honda (Torque inc.)
Illustration (History): Chiaki Kobayashi
Copy Writing (corporate site, special site): Moto Oge
Photography Producers: Tomoyoshi Arima (JXL), Yu Ichikawa (JXL)
Photography: Hidetoshi Fukuoka, Mikoto Nakamura, Haruma Hori
Hair and makeup: Takaki Kako, Chika Kamejima, Misaki Sakoda, Ayaka Sasahara
Interior Styling: Tsubasa Sakai, Risa Makino
Photography (interview): Nanako Koyama
Photography (products): Tomiyuki Takahashi
Assistants: Yayoi Takigawa, Moe Sato, Ayaka Kamata, Shiki Takahashi

SPECIAL SITE_
CG animation MORIE Inc.
Illustration: Ayumi Takahashi
Music: Ryo Arimura
Copywriting: Kana Koyama (Ueda-ya Co., Ltd.)
Translation by Silva Lilia (Latina Fortis)

MAGAZINE
Direction / Planning: Ito Research Institute
Editing and Planning: Wakana Yamazaki (itskn), Yuka Moriki (itskn)
Produce, Project Management: Risa Yamada (itskn), Kie Amamoto (itskn)
Writing: Maki Funabashi, Miho Oashi
Photography: Masaaki Inoue, Masashi Ura, Masahiro Shimazaki, Go Kakizaki
Interior Styling: Yusuke Takeuchi

Design: Yuta Ide (mount inc.)@YutaIdemsd1
Design, Information Architect: Thai Towong (mount inc.)@tai_t_
Design Assistant: Liu Yifan (mount inc.)
Development: Nana Terada (mount inc.), Nozomi Suda (mount inc.) @soundmuta
Project Management: Masakazu Tsuru (ingraft)

2. Soil and Digital – Biophilic Studio

Emotions exist even in the digital world 🦌

This is the corporate website for the biophilic studio "Soil and Digital." Their theme is to view seemingly contradictory elements, such as nature and technology, as mutually complementary. Their music videos feature visuals that recreate natural motifs using digital technology.What's interesting is that by reinterpreting these natural motifs digitally, you're overcome with a unique and indescribable sense of nostalgia. It's a discovery that emotion can exist even in the digital realm.The header section features quotes from poets, writers, and philosophers related to "nature," and the logo, which transforms with hover actions, is also interesting.

Another astonishing thing is that they are developing a font called "Doko" (土語) for all 50 Japanese syllables.When you turn on BIO mode, the hiragana characters on the site change to "local language," and the exquisite "unreadability" of these characters is quite interesting. It's as if it's saying, "Nature is not something that is easily understood and organized," which is fascinating, and this is truly the pursuit of the space between nature and digital.

Client: Soil and Digital
Direction, Design:Yuka Kanno @yukalqqqozlz
Development: Tomoyuki Nakata @yukiwebz7

3. Radio that "Listens" to Life – Nippori Seminar

It's like a brain teaser! 🚶

The Nippori Seminar website is themed around "discovery." With its freely designed and exciting layout, it's a pleasantly pleasurable site that feels like a mental exercise. In the HIGHLIGHT area, you can enjoy the fun of discovery by using the mouse stalker to reveal motifs related to the radio content, and by moving the past archives that are stacked like playing cards.

In addition, What's amazing is that clicking on the floating "EXPLORE" button on the screen completely changes the appearance of the site.Not only that, but the content also changes drastically. There's a sense of joy in exploring the secret "hidden side." All the playful elements are connected to the idea that "even if you stray from the path, there's always a way," and the philosophy of Nippori Seminar shines through in this site.

Creative Direction: Kota Futamura @LammTokyo
Art Direction & Design: Shun Kudo
Development: Sora Shimada @sora1406

4. GYOKURO STUDIO

The minimalist appeal comes from handling it on a small scale. 🔸

The GYOKURO website is striking for its "minimalist rhythm." The logo, which only appears when you mouse over it, is particularly memorable, suggesting that the "shape" of the logo is one of its defining characteristics. This logo, along with other elements of the site, uses a somewhat disordered "discrepancy in placement" as a motif, and I felt that these elements create a musical rhythm throughout the entire site (speaking of musicality, isn't this site designed by Mr. Nakano!?).

In the music video, the digitally moving green text motion from right to left, and the GIF animation that appears when you hover over the words "What Is GYOKURO," are not used extensively, but rather sparingly to create a minimalist appeal.I felt that the key to the design lay in the balance between "pushing" and "pulling back" in areas like the news section, where unnecessary motion is avoided.

From the thumbnail UI for the WORK details to the way the credits are displayed, every single detail of this site is inspiring, showcasing both creativity and an experimental spirit, while also possessing a delicate design sensibility.

Creative Direction & Web Design: Hiroaki Nakano (@HiroakiNakano
Art Direction & Design: Takumi Saito (@takumi_3110
Logo Motion: Toshiki Okamoto@TSKOKMT
Sound design: Shuta Hasunuma (@Shuta_Hasunuma
Photo/Video: Rintaro Kanemoto (@torintaro
Web Front-End Developer: Keita Yamada (@P5_keita

5. Front Flip Portfolio

When is the best time to effectively communicate all the information?

Hironao Tsukaki's portfolio site (VER.02) is eye-catching with its striking red color that permeates the entire site. The visuals have changed significantly since the last version, but the relentlessly edgy style remains unchanged, and the site itself functions perfectly as a portfolio.

This site uses a red background and is mostly composed of "text" and "motion."The key point is that emphasis is placed on "when" and "effectively" each piece of information should be communicated.While the site's impact might be eye-catching at first glance, I think this is where Tsukaki's stoic and challenging nature truly shines through.

Produced by: Hironao Tsukaki

6. RYDEN

Accent colors and motion express identity?!

RYDEN's website features a striking contrast between monochrome and neon yellow.This neon yellow accent color creates the impression of flashes of lightning or thunder swirling through the site.This really sets the tone for the entire site! The company slogan uses neon yellow to play both positive and negative roles, and the CONTACT section has an image of something falling from the sky. Each neon yellow expression is distinctly RYDEN, and I'm amazed at how they express their identity (or so it seems) through "accent colors" and "motions" that aren't the main focus.

Another interesting piece of content is "OUR VISION IN ART." In this section, designers express Leiden's philosophy and business approach through art, showcasing brilliant content ideas. Each idea is impressive, but the way they are brilliantly translated into design is truly masterful.

Producer: Yuichiro Inoue (RYDEN)
Art Director / Designer: Shinya Okano (RYDEN)
Designer: Kanta Matsuno (RYDEN)
Frontend Developer: Sou Mitsui (formerly of gaz Inc.)
Photographer: Masashi Nakata
Hair & Make: Kasa Ueji

7. iro Inc.

I've created a canvas on my monitor screen where I can freely play around with things 🖌️

A large screen consisting of 130 monitors arranged in a grid, like a giant video display.iro inc's corporate website best exemplifies these concepts as a "canvas where units can be freely increased or decreased."I'm amazed by the free and ever-changing expressions.
The homepage displays achievements randomly, changing the key color with each display to suggest "iro = color = variety." This large-scale, visionary interface is consistent across all pages, with each page—list screen, detail screen, etc.—using a grid-based unique expression, making it a site where you can enjoy free canvas expression no matter which page you visit.

Production: STAND FOUNDATION co.,ltd.

8. Shimizu Corporation | Recruitment Special Site

Making a company name that sounds stiff more approachable by using the words "Thoughts" and "Bookshelf" 📖

Shimizu Construction's recruitment website features an eye-catching bookshelf interface. It includes sections such as "This is how I want to work" and "This is the kind of work I want to do."The book is structured to allow readers to learn about Shimizu Construction's vision, work, and systems, starting from the "thoughts" behind their work, and this structure is presented as an interface in the form of a "bookshelf."The idea of ​​breaking down Shimizu Construction, a company that might seem rather "stuffy" at first glance, based on "people's feelings" and then presenting it in a friendly interface like a "bookshelf" is brilliant, and it directly aligns with the site's concept of "Shimizu is surprisingly close to you?"

What I also found interesting about this site is how, when you arrange "thoughts" like books on a shelf, it simply and directly makes you feel positive. The way it elevates the feelings of users as they access the site and allows them to view the content is something that only spicato, which carefully understands people's feelings, could do.

Agency / Works Japan Co., Ltd.
Art Director, Designer / Masayuki Hosoo @MasayukiHosoo
Front-end Developer / Yuki Kanayama @spicato_kana

9. "We demand demolition" | Shibuya PARCO

It's a bold yet delicate KV (Keyboard) 👷

The Shibuya Parco "Demanding Demolition" special website allows you to watch KV videos over and over.The key visuals and animation have a bold yet delicate feel, like layers of cement being applied, which is quite striking.This is the first major renovation since its opening in 2019, and it's a reinterpretation of the founder Tsutomu Masuda's message, "We advocate for demolition." What's interesting is that they've transformed the value of the major renovation into "advocating for demolition" (or perhaps it's a renovation based on values), and that's what makes Parco so appealing. I was also drawn to how they expressed this concept through "cement," giving it a "weight" and realism that goes beyond just the word "demolition."

Graphic Design: Tezzo SUZUKI
Movie: Taihei Takei
Web Design & Development:maam.inc
Produced by PARCO, RCKT/Rocket Company*

10. Azusa Fukunaga's website: Dance

It feels like I've come to Mr. Fukunaga's shop 🍶

One of the sites that became a hot topic in October was Azusa Fukunaga's portfolio site. I believe the site was launched in 2023, but it spread at an incredible pace thanks to a single post on X. The world of the web is one where trends change rapidly, but the fact that it is still a hot topic two years later suggests that there is something more to this site than just technology. The concept is "dancing," and the words that Fukunaga has written down seem to dance, or sway like steam. The way you scroll horizontally through it, like looking at a pamphlet, is also nice,It felt less like visiting Mr. Fukunaga's "website" and more like visiting Mr. Fukunaga's "shop," and that's what I found interesting about the site.

Client: Azusa Fukunaga
Produced by: Montblanc
Direction: Kyoji Takeda
Copywriting and text editing: Azusa Fukunaga
Illustration by: Appalot
Web design: Mao Kameyama
Website construction/CMS development: Taiichi Matsutaka

That's all!

How did you like our summary of websites for October 2025? Every site was interesting this month too!

Here are some of the things that I found particularly impressive on this site:
By emotionally re-editing "corporate information," we created an experience that evoked curiosity and excitement."Kokuyo Corporate".We explored the space between nature and the digital, including indigenous languages."Soil and Digital"Clicking on a certain element completely changes the appearance of the site."Nippori Seminar"It was a perfect combination of ideas, an experimental spirit, and delicate design."GYOKURO STUDIO".They express their identity through "accent colors" and "motion.""RYDEN Corporate Website".Those were some of the things that left a lasting impression on me. What about you all?

Thank you for reading to the end this time as well!
See you again next month! The fun end of the year is almost here!

This was the iDID Media editorial team!

Credits

Text, Edit: iDID Editorial Department

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