Charm Care invests ¥300 million in donut robotics for eldercare humanoids

The partnership builds on an existing trial: donut robotics' "cinnamon" humanoid has been at a Charm Care nursing home since July 2026, initially handling patrol duties. The investment formalizes that relationship and aims to move the robot toward a more interactive role, helping staff respond to nurse calls. That matters because Japan's aging population is increasing demand for eldercare while the industry struggles to recruit enough workers.

donut robotics says cinnamon uses Vision-Language-Action AI to interpret its surroundings and language, and can learn movements from videos and motion-capture data. The company has also filed a patent application for gesture-control technology that would let users give instructions through gestures and finger movements rather than voice. Still, representative director Taisuke Ono acknowledges there is only little cinnamon can do now, expressing hope that it will move in almost unrecognizable ways in a few years.

Whether the alliance delivers on that ambition hinges on how well the robot's capabilities translate into real care settings, where physical AI faces many challenges according to Ono. If it works, the payoff would be support for eldercare residents and relief for care staff contending with persistent recruitment difficulties.