Key Takeaways (3-Point Summary)
・Trend: A rice wholesaler in Kagoshima Prefecture has introduced a stacking robot, eliminating the physical strain of handling 4,000 bags a day — achieving a dramatic improvement in production efficiency.
・The Reality on the Ground: At the same time, 2kg stand packs cannot be stacked by machine and still require manual handling — revealing the real-world trial and error that defines life on the manufacturing floor.
・Looking Ahead: The company plans to use AI for promotional activities going forward, and will continue its social contribution work through a partnership with a local high school.
mirAI news covers the people building the future from the manufacturing floor. For this feature, we visited Taniguchi Shoten Co., Ltd. — a rice wholesaler based in Kagoshima Prefecture with sales across all of Kyushu. We explore how they are confronting the realities of labor shortages and grueling physical work, what walls they have run into, and what makes them stand out.
Q. Could you give us an overview of your business?
“Specialists in Kagoshima-grown rice.”
Taniguchi Shoten Co., Ltd. is primarily a rice wholesaler. Rice is sourced directly from contract farmers, inspected in-house by three certified agricultural product inspectors, and handled end-to-end from processing to sales — a level of vertical integration that sets the company apart.
When it comes to Kagoshima-grown rice varieties, their lineup is essentially complete — “if it exists, we have it.” The company distributes across the entire Kyushu region, and its large-capacity no-wash rice processing machine is a competitive strength no rival can match.
Q. What are your flagship products?
“Special A-rated ‘Akihonami’ rice — and a wildly popular amazake.”
The core product is rice across all varieties, but the standout right now is Akihonami — a Kagoshima-grown variety that earned a “Special A” rating this year. Even more striking is the amazake (sweet fermented rice drink) made exclusively from Akihonami rice, which has gained remarkable popularity. Because it is non-alcoholic, it can be enjoyed by everyone from young children to adults. It is currently sold exclusively within Kagoshima Prefecture.
Q. What led you to introduce a robot?
“Escaping backbreaking physical labor.”
The factory has seen active investment across the board — dedicated machinery to remove foreign objects such as stones and metal, and solar panels to cut electricity costs. But the most notable step has been the introduction of a stacking robot. The primary reason: relieving employees of brutal physical labor. Stacking 4,000 five-kilogram rice bags a day is an enormous physical burden, and eliminating that strain was described as urgent.
Q. What results has the robot delivered?
“A dramatic leap in production capacity.”
With the robot handling the loading, the staff previously assigned to stacking are now free to focus on other work. And unlike human workers, the machine needs no breaks — it can run at full capacity for eight hours straight. Daily output and overall production capacity have improved dramatically, representing a major efficiency gain.
Q. What challenges remain on the floor?
“The 2kg pack that the machine can’t handle.”
Automation has not been total. While the 5kg bags — the main product — can be handled by the robot, the 2kg stand packs collapse when the machine tries to stack them. As a result, some products still have to be stacked by hand. It is a candid reminder of the difficulty of full automation, and a real-world compromise the team continues to live with.
Q. What are your plans going forward, and how does AI fit in?
“Taking Kagoshima rice to the whole country.”
The staff member who has spent years on the floor as a rice professional can identify varieties — Koshihikari and others — by sight alone. The ambition going forward is to promote this high-quality Kagoshima rice to the entire country. AI will be a key tool in that effort — with plans to use it for promotional video production, brochure creation, and website development across the marketing side of the business.
Q. Social Contribution and Community Ties: Walking with Local Students
The company is also deeply committed to its local community. Through a partnership with Satsuma Chuo High School, students are given hands-on experience in rice sales — including photography, labeling, and selling at local supermarkets. The proceeds are donated to school clubs that have been struggling for funding: the weightlifting club first, and then the volleyball club and others the following year. This initiative is set to continue every year, with the goal of supporting the next generation in the region.
Editor’s Note
This visit felt like a living example of the mirAI news ethos: “You don’t have to be number one. Build the future from the floor.”
The robot handles the heavy lifting to boost productivity — but the packages that collapse when stacked by machine are still stacked carefully by hand. The veteran’s ability to identify a rice variety at a glance, built over years of experience, remains untouched. And for the promotional push ahead, the team is ready to embrace the latest AI tools with open arms.
Cutting-edge technology, unglamorous handwork, and warm support for local high school students — all coexisting under one roof. To us, that felt like one clear answer to the question of what the human role looks like in the age of AI. We look forward to continuing to tell stories like this one.