Japan’s care sector is short of staff. Operators are starting to put money—and floor space—behind humanoid trials rather than waiting for perfect robots.
On 5 October 2026, nursing-home operator Charm Care announced a capital and business alliance with humanoid firm donut robotics, investing ¥300 million (about $2 million) via new shares. [1]
The trial so far
According to Robotics & Automation News, Charm Care operates 100+ private homes and has been trialling the “cinnamon” humanoid since July 2026. The plan is to expand from patrol work toward nurse-call assistance. [1]
What cinnamon is (company description)
The company describes cinnamon as about 170 cm, bipedal, using Vision-Language-Action AI—software that ties what the robot sees to language and actions—and learning from video and motion capture, with a gesture-control patent application. Those are company claims. [1]
Capabilities are still early
The same coverage notes that current capabilities are limited; a founder quote in the piece characterises how little cinnamon can do now. Safety and clinical outcomes are not yet published. [1]
Why operator capital matters
An operator writing a cheque and running an on-site trial is a concrete eldercare deployment path—more grounded than a lab demo alone—especially in Japan’s labour-shortage context. [1]
What we don’t know
- When (or whether) nurse-call assistance will move beyond trial into routine use. [1]
- Published safety or clinical outcome data—none in this reporting.
- How staff and residents experience day-to-day interactions beyond the company narrative.
The Bottom Line
Charm Care is putting roughly $2 million and continued floor trials behind donut robotics’ cinnamon humanoid. The ambition is clear; the founders themselves still describe today’s capabilities as early.
Sources
- Robotics & Automation News — 5 October 2026 — https://roboticsandautomationnews.com/2026/10/05/japanese-nursing-home-operator-charm-care-invests-in-humanoid-company-donut-robotics/105545/
 in donut robotics and deepening a trial of the cinnamon humanoid, aiming to move from patrol toward nurse-call assistance.){kind=link}