On the outside, an animatronic plush or interactive charm robot like Yukai Engineering's Mirumi feels soft and huggable thanks to custom Japanese fur (source). Inside that ~155 g body, however, sit a motorized head-turning assembly, touch and sound sensors, and a USB-C rechargeable battery—meaning you should handle it differently than a polyester-stuffed plushie.
Disclosure & scope: Published by mirumirobot.com (seller of Mirumi Ivory, Pink, and Gray). Care and design facts cite Yukai Engineering's official US FAQ and development notes (checked October 2026).
1. Three Handling Rules for Motorized Plush Companions
- Let the head turn under its own power: Mirumi's neck executes tuned movement patterns and speed changes in response to head petting and sound (source). Avoid manually twisting the head against the motor mechanism.
- Use the arms on ~10–15 mm straps as intended: Yukai Engineering prototyped the arm mechanism to balance holding strength and appearance (source), recommending a strap diameter of roughly 10–15 mm (US FAQ).
- Never submerge or machine-wash: Per the US FAQ, Mirumi is not washable and its fur cover is non-removable. Always follow the included manual for gentle handling and charging.
Explore the lineup: Mirumi Robot Ivory, Mirumi Robot Pink, and Mirumi Robot Gray.