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A Society Co-Created with “RD Workers”

Tomohiko Yamanashi
Nikken Sekkei Ltd.

Isamu Nishi
Nikken Sekkei Ltd.

Takayuki Shigemitsu
NPO Ryoyu World

Ikumi Toga
Dentsu Inc.

Have you heard of the term “RD Worker”? RD Worker is a new concept announced in September 2025, referring to people who are working or seeking to work while living with a “rare disease.” When you hear the term “rare disease,” you may feel that it’s a world unrelated to your own. However, the intersection of “rare diseases and work” is likely to become much more relevant to us in the future.
In Part 1, we explained the meaning of the term “RD Worker” and the background behind its development. In Part 2, Dentsu Inc. Creative Director and Copywriter Ikumi Sotozaki continues to present the rest of the creative work she produced on the theme of “Rare Diseases and Work,” along with interviews with the speakers who participated in the event where the work was unveiled.
*In this article, the term “rare and intractable diseases” is used comprehensively to include not only those defined by national systems—such as “rare and intractable diseases,” “designated rare and intractable diseases,” “rare and intractable diseases under the Act on Comprehensive Support for Persons with Disabilities,” and “rare diseases”—but also “intractable chronic diseases,” as defined by the NPO Ryoyu World.
Vol. 3 “Okinasarasazu”: Conveying Even Difficult Topics with Charm

Planning and Production:

──This team came up with ideas to make communication with others fun and smooth for people with intractable diseases in the workplace. What was the inspiration behind this project?

──You created 65 different character designs and phrases so that this tool could be used casually in business chat apps like Teams or LINE. Could you tell us about any special considerations or efforts you made during the process?
──Please share the message you hope to convey through this work.

Vol. 4: Visual Representations That Make the Pain and Symptoms of RD Workers Visible
*Please note that the video contains flashing images

Planning and Production:

──This team created a video work that personifies and transforms the typography of “RD WORKER” to express the actual pain and symptoms RD workers experience in their daily work. How did you come up with this concept?
──You conducted interviews with RD workers while creating the video. Could you share any insights or specific details you focused on during that process?
──I imagine it takes a lot of imagination to translate the pain and symptoms of RD workers into copy. Could you tell us about any particular challenges or precautions you took?

──In creating expressions that don’t exist in the real world from scratch, you utilized AI with the cooperation of the VFX team at Dentsu Creative Pictures Inc. Could you tell us if there were any specific points you were particularly particular about regarding AI generation?
──If there is a message you’d like to convey through this video, please share it.

Approaching the Theme of “Inclusivity”
In conjunction with the release of creative works aimed at raising awareness of RD workers, we held a panel discussion under the theme “Designing a Workplace and Society Where Everyone Can Work Comfortably.” Participants included Tomohiko Yamanashi, Chief Design Officer at Nikken Sekkei; Isamu Nishi of Nikken Sekkei’s Inclusive Design Lab; Takayuki Shigemitsu, Chairman of Ryōiku World; and Ikumi Sotozaki of Dentsu Inc.
At the Nikken Sekkei Inclusive Design Lab, where Mr. Nishi is based, they place great importance on a process of collaborating with diverse stakeholders to create a social environment where everyone can live and work authentically, regardless of physical or mental condition, age, language, or other differences.On this occasion, Mr. Shigemitsu of Ryoyu World approached them with a proposal to expand the reach of RD Workers. With the hope that this event would serve as an opportunity to raise awareness about rare diseases—which still lack widespread public recognition—and help promote RD Workers, Nikken Sekkei’s Inclusive Design Lab co-hosted the event with Ryoyu World.

──How did you find hosting this event titled “Designing the Future of ‘Intractable Diseases × Work’”?
──Thank you. We’re delighted that you were able to present at“PYNT Takebashi,” a co-creation space platform dedicated to solving social issues. From your perspective as someone promoting inclusivity in the field of design, were there any works that particularly stood out to you?
──I see. It was a new discovery for me that abstracted concepts make it easier for a wider range of people to relate to them personally. What do you think is needed going forward to help RD Workers gain broader recognition?

We also spoke with Tomohiko Yamanashi, Chief Design Officer at Nikken Sekkei, who spoke at this event. As an architect, Mr. Yamanashi has worked on numerous renowned buildings, but 10 years ago, he was diagnosed with Parkinson’s disease and experienced becoming an RD worker himself.

—Mr. Yamanashi, you have been active on the front lines as an architect for many years. Since becoming ill, has your perspective on your current work or architecture changed?
──So it’s not a straightforward process to incorporate that into your work, is it?
—Was there a specific turning point that changed your perspective, Mr. Yamanashi?
──Has anything changed since you started disclosing your illness?
──What do you think is needed to create a society that brings out the potential of RD workers?
──From your perspective as an architect, could you share a message for the creative team behind this project?
Precisely because the world is full of “meaning,” we must cherish that sense of “something just feels right”
Finally, we spoke with Mr. Shigemitsu, Chairman of the NPO Ryoyu World, who helped develop the term “RD Worker” and who collaborated with us throughout this creative project, working closely with people living with intractable diseases and supporting us every step of the way.

──What were your expectations for this creative project?
──This time, four teams of young creators each brought their ideas to life using different approaches. I’d like to hear your honest thoughts.
──Thank you for your kind words. Now that we have works and tools to spread the term and concept of “RD Worker,” could you share your thoughts and outlook for the future?

—I often feel this way in my work with advertising and communications as well. Do you think it’s better not to start with “significance”?

It was very impressive to see Mr. Shigemitsu—who lives with a rare disease and has long dedicated himself to social support for people with such conditions—place the highest priority on “That’s cool” and “This is fun,” and value making the experience something everyone can easily relate to personally.
I believe this creative project will be a major step toward spreading the term and concept of “RD Worker”—which is still in its infancy—to the wider world and growing it into something everyone knows.
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Author

Tomohiko Yamanashi
Nikken Sekkei Ltd.
Chief Design Officer
His specialty is architectural design. He has received numerous awards, including the MIPIM Asia Special Jury Award in 2009 for the “Timber Hall,” the Architectural Institute of Japan Award (Project Category) in 2014 for the “NBF Osaki Building (Sony City Osaki),” and in 2019 for “Building No. 1, Toho Gakuen University Chofu Campus.” His recent works include the “Japan Pavilion” and “Sumitomo Pavilion” for the 2025 Osaka Kansai Expo.He has served as Vice President of the Architectural Institute of Japan since 2024 and is also a judge for awards such as the Japan Seismic Isolation Association Award.

Isamu Nishi
Nikken Sekkei Ltd.
Digital Strategy Office / Inclusive Design Lab
While advancing digital design and digital transformation (DX) in the architecture and urban planning sectors, we are also dedicated to promoting and implementing inclusive design both within and outside the company. We prioritize a “co-creation” approach where users with diverse characteristics participate in dialogue from the design stage, advocating for urban development that transforms each individual’s sensibilities and experiences of inconvenience into new value.

Takayuki Shigemitsu
NPO Ryoyu World
Chairman
Fellow at the Institute for Healthcare and Nursing Solutions, Tama University Graduate School; Researcher at St. Marianna University School of Medicine. Developed cerebrospinal fluid hypovolemia in my mid-20s; after resigning from two jobs and spending five years bedridden, I am currently conducting a social experiment on flexible work arrangements. My primary symptom is pain 24 hours a day, 365 days a year; the stress from this pain has exacerbated my alopecia areata and made me even more impatient.

Ikumi Toga
Dentsu Inc.
Second CR Planning Bureau
クリエイティブディレクター/コピーライター
Creative direction and copywriting form the core of my work, which also encompasses branding, business development support from a creative perspective, communication development, product development, and project management. Served as Representative of Dentsu Inc. Gal Lab from 2016 to 2020.

