This is Hamamoto from TIMEWELL.
When Illness Becomes a Business Idea
Yumiko Honma works in retail sales for Kirin Beer and is currently developing a community service for dialysis patients. In 2022, she was diagnosed with end-stage renal failure. What followed was not just a medical experience — it was the discovery of a gap she had not been aware of: hundreds of thousands of people managing the same condition, largely in isolation, without a structured way to find each other or share what they had learned.
This interview covers her business idea, the entrepreneurship program that gave it momentum, and the principles she has built her thinking around.
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The Business Idea: A Community Built for Forward-Looking Patients
What kind of service are you trying to create?
There isn't really a dedicated place for dialysis patients to gather. Online, there are some Facebook groups and social media communities, but the participation rate among all dialysis patients is probably 1% or less. Patient associations and in-person groups have been around for a long time but are increasingly outdated — and there isn't a venue where patients' voices actually surface.
At the same time, people who have been living with dialysis for years know an enormous amount. When I've gotten to know some of them personally, they've taught me things I had no idea about — real practical knowledge that wasn't available anywhere I could find it. But there is no place to share that knowledge broadly.
So the first thing I want to build is a community where that experience can be shared. But when I started a LINE open chat group for dialysis patients and watched how it developed, I noticed something: because we're sick, there's a strong tendency toward heavy conversations — complaints, venting, difficult feelings. I understand that completely. But when a community goes in that direction, it gets dark quickly, and just participating becomes draining. Encouragement is fine, but when the mode is purely heavy, it has a negative effect on everyone.
So the design of the community itself matters. Without active guidance toward positive communication, it pulls in the wrong direction. What I want to build is a place where patients can have forward-looking conversations.
When I started thinking about making this a real business, I imagined patients working together in project teams — developing products for other patients, selling them, sharing ideas. That combination of peer knowledge, practical product development, and a reason to be in the community together might be what makes positive communication sustainable.
What I'm really after is a space for dialysis patients to share life hacks with each other.
What principles guide your thinking as you develop the concept?
The core theme, from the very beginning, has been: "Illness doesn't end your life." Getting sick doesn't mean giving up on having a rich, interesting life. That's the foundation.
The second principle is: patients should not be in a position where they are only protected. People being kind because you're sick is genuinely appreciated. But when protection becomes excessive, it can take away someone's independence. In the interviews I've done, I've seen cases where people said they wanted to work, but when I listened more carefully, they actually didn't — because welfare had covered their needs and the motivation to work had been eroded. Being supported is one thing; building toward self-sufficiency is another. I believe welfare should lead to independence, not substitute for it.
So the two principles: "illness doesn't end your life" and "patients are not just people to be protected."
The Shido Program: How the World Got Bigger
What brought you to the Shido entrepreneurship program?
It started with an internal program at Kirin called the "Mirai Zeminah" (Future Seminar), run by a volunteer organization inside the company called Kirin Academia. It was a three-month new business learning program with participants from Toyota, ANA, Kirin, JT, and IBM. One of the things that made it distinctive was a team-formation process — participants came individually but could form pairs or small teams with people whose ideas resonated with theirs. I found that genuinely exciting. I participated two years in a row.
The "Change by One Japan" program was introduced inside the seminar, and Shido was introduced within Change by One Japan. I went to an information session — not entirely sure what I was getting into — and thought the content was good enough to apply.
What changed for you through the experience?
The biggest change was that my world became much larger. Before Shido, my professional life was essentially limited to my company. Through the program, I met people working in all kinds of fields, doing things I had never known existed. I realized how little I had seen of the world.
Meeting a diverse group of people and hearing what they were working on was genuinely valuable. I'm still in the learning phase, but I've found it to be a place I enjoy being.
Was there a project from the cohort that stood out to you?
There was someone working on marine plastic waste. I had just returned from a camping trip at the ocean — near my hometown, which is a quiet area that doesn't put much energy into cleanup efforts. The scenery was beautiful but the trash was significant. My friend and I had been talking about how much more people the area could attract if the waste were cleaned up. Then I found out someone in my Shido cohort was working on a marine waste business. It felt immediately meaningful and necessary. If all the plastic disappeared from the ocean, what would that do for coastal communities? Japan has been investing heavily in inbound tourism — better scenery alone creates real value.
That person's project has stayed with me.
What does "doer" mean to you? What's the key to becoming one?
The key to becoming a doer is: when you're unsure, go. Hesitation guarantees no progress. If you push forward, things somehow work out and you find collaborators. That's what I believe.
I'm someone with high empathy — my mother passed this on to me. I feel things strongly. For me, being a doer means moving when uncertain, and caring about the people around you as you do it. Trusting your own instincts and having the courage to act on them is the first step.
What kind of person should consider applying to Shido?
Anyone who has even a small amount of interest should just do it. The government is investing in this — everyone should take advantage of it.
I genuinely wonder sometimes what I'm doing among my cohort, with people working on quantum computing, making thread from CO2, building lunar exploration vehicles. It feels like I snuck in somehow.
But once you're there, you're influenced by the people around you. You think: I can do something too. So I want people like me — people who don't fit an obvious profile — to come and participate.
The Path Forward: Collaboration Across Industries
What does the future look like for you?
My current constraint is that my contract employment category at Kirin prohibits side work. I'm trying to figure out how to navigate that — and simultaneously working to get the side-work restriction lifted. It might not happen this year, but I want to reach a point where I can do this openly, running it alongside my company work.
Getting the side-work restriction lifted is the first hurdle. Once that's cleared, I can start building the business properly.
Any message for people following your work?
Dialysis patients have a huge number of small, practical problems. I want to solve them one by one, using patients' own ideas. But we can't do it alone — we need collaboration from many different industries.
The medical side of things — clinical issues — will be handled by the medical industry. What I want to solve is the life-integration side. The life hacks. For example: during dialysis treatment, even in winter, you can't wear long sleeves — the access site on your arm needs to be accessible throughout the treatment. But with a small modification, you could. Nobody has made that modification yet. I want to develop solutions like this ourselves.
So it's not just healthcare companies we could work with — it's clothing companies, food and beverage companies, home goods companies. Kirin's patients have asked for nutritional drinks formulated for people with fluid restrictions. I've been thinking about whether a supplement format — maybe a gummy — would actually be better. There are so many product categories where collaboration could work.
I may end up reaching out to fellow Shido alumni unexpectedly. When I do, please be kind — I'm looking for collaborators.