The Japanese FAQ says Mirumi responds unpredictably to sound and does not understand words or contain AI.
Source 1○ Not tested by ROBODROMO yetHome & desktop
Yukai Engineering Mirumi
A small expressive companion for carrying around. It reacts without understanding language; delivery timing needs checking.
Named retail referenceMirumi Ivory; Japanese maker store. Hardware revision not supplied.Source 3
Size and massApproximately 100 × 110 × 140 mm, including arms in depth, and 155 g; manufacturer figures.Source 3
BodyApproximately 100 × 110 × 140 mm including arms; 155 g.Manufacturer source
PowerBuilt-in rechargeable lithium-polymer battery; 5 V/1 A charging.Manufacturer source
Recorded specifications, with their source limits. These are not our measurements. See all specifications and configurations
Price and availability
The Japanese Ivory product page lists ¥22,000 including tax and displays sold out in the observed offer. A separate catalogue entry advertises a late-November preorder; that is not immediate stock.
A recorded offer can change. Check its source date below and confirm the exact package, delivery region and total cost with the seller.
Check the original sources
Image and credit
Manufacturer image and sourceTest track0 attempts run
We have not physically tested this robot. The task plan below is a starting point, subject to the exact unit and supported functions.
See the proposed test trackOn the ROBODROMO
test track
Three proposed tasks. Ten attempts at each suitable task, with the outcome, time and human help recorded. Confirm the exact robot, software and safe setup first. These tasks are not evidence that this robot can do them.
Respond to the same supported prompt
Proposed task. 0 of 10 attempts run.
Repeat a supported interaction with another person
Proposed task. 0 of 10 attempts run.
Restart and repeat the same interaction
Proposed task. 0 of 10 attempts run.
Pick a square to see what each attempt will record.
We will record the outcome, time, control mode, human help, safety stops, exact hardware and software, conditions and full video.
Proposed attempt; not run Only proceed if the exact unit supports the task and the setup is suitable. Keep remote control, scripted operation and autonomous operation separate. A completed attempt alone does not prove autonomy.What each square will show
Finished without extra helpNeeded a person’s helpFailedNot run yet
Keep the conditions visible
Name the control mode, surface, object or prompt and every intervention. Ten attempts are an initial result, not proof of long-term reliability.
Read our proposed test methodHow much do we really
know?
Separate our own tests from published claims and the limits of the evidence. The counts below describe records, not performance or confidence scores.
Tested by ROBODROMO
We have not physically tested this robot. No performance score or measured attempt is available.
See the proposed test track01 / The assessment
What the evidence supports.
Capability and readiness are separate. These written findings are not a numerical rating or a physical test.
Capability
What can it actually do?
The specific maker claims and any independent observations are listed below. We have not run our own task tests on this robot.
Read the source-based assessmentReadiness
Could you use it in real life?
Intended use: Expressive head response while carried. Dependable everyday use has not been established by the evidence reviewed. The maker explicitly excludes AI and language recognition. Assess attachment, physical response and care instead.
Read the source-based assessmentA clear limit
This is a research profile based on the sources below, not a hands-on test. Maker claims remain attributed to the maker; they do not prove repeatable performance in your home or workplace.
02 / Can it actually do it?
The claims, with their context.
The wording below keeps each source’s limits. A demonstration, a maker’s claim and a repeatable real-world result are different things.
The maker specifies users aged fifteen and above, no waterproofing, and a cover that cannot be removed or washed.
Source 1The FAQ quotes about two hours charging for about eight hours use. A USB-A to USB-C cable is included but a mains adaptor is not. These are maker figures, not measured results.
Source 1The Japanese Ivory product page lists ¥22,000 including tax and displays sold out in the observed offer. A separate catalogue entry advertises a late-November preorder; that is not immediate stock.
Source 3The maker’s April 2026 launch says the roughly eight-hour operating time depends on frequency of use; it is not an independently measured endurance result.
Source 5Check the original sources
Every source keeps its original check date. Manufacturer information, research configurations and independent observations have different limits.
Open the source listKnow the exact robot
The name alone may not tell you which hardware, software or support you get. Keep editions and optional equipment separate.
Specifications and configuration
Model detail
Specifications and configuration
Figures below retain their source and configuration limits. Manufacturer specifications are not independent performance results.
Mirumi Ivory; Japanese maker store. Hardware revision not supplied.
Source 3Approximately 100 × 110 × 140 mm, including arms in depth, and 155 g; manufacturer figures.
Source 3Approximately 100 × 110 × 140 mm including arms; 155 g.
Manufacturer sourceBuilt-in rechargeable lithium-polymer battery; 5 V/1 A charging.
Manufacturer sourceAbout eight hours, depending on movement frequency; about two hours charging.
Manufacturer sourceSound/voice response and head-touch sensing.
Manufacturer sourceThe exact model and configuration
The exact model
Meet Yukai Engineering Mirumi
This guide uses the Japanese Mirumi support page captured on 27 October 2026. It improves on the retained January 2025 announcement, while leaving regional offers and hardware-revision matching open. The working reference is now the named Japanese-store Mirumi Ivory product, rather than an unspecified prototype or regional offer. Colour is a named retail variant, not evidence of a distinct mechanical generation; the physical revision remains unknown. The April 2026 Japan launch is separate from the January 2025 announcement.
Further assessment notes
Setup, support and daily use
04 / Living with it
Right robot, right expectations.
What ownership could involve
Think about where the companion will be carried and whether that setting suits a device with exposed fur and moving parts. In a practical review, compare sound responses in a quiet room and a busy public setting without assuming a missed response is necessarily a fault. Check attachment stability during ordinary walking and record any detachment. An expressive movement can be engaging without implying comprehension. Regional warranty, replacement batteries and repair routes remain to be checked. Keep the existing announcement as history, while using current support information for operating limits. The current Ivory page separates operating temperature (0–45°C) from charging temperature (15–40°C). The store shipping policy says preorders follow their product-specific dates; its normal three-to-five-working-day dispatch guidance is not a promise for sold-out or preorder stock. The launch price of ¥19,800 in April is historical, not the current quoted offer. UK availability, warranty and battery repair remain unverified.
Support, software and repairs
The April 2026 release announcement supersedes the earlier crowdfunding plan and describes Japanese retail launch. International rollout plans are not proof of current stock everywhere. Confirm current regional seller, battery servicing and warranty. Use the final production specifications rather than the tentative CES prototype sensor list.
Questions still open
What needs checking before you decide.
- No language or intelligence capability should be inferred from head movements.
- No independent battery, attachment or response test assessed.
- Current regional stock and delivery are not established by the support FAQ.
- The Japanese retail name is established, but no unit serial, firmware or mechanical revision has been inspected; no interchangeability with other colours or regional products is inferred.
See it in action
Our filmed attempts will appear after testing. Existing footage below keeps its original description and limitations.
See the robot
Mirumi official video
Play video
Video linked from the official product or documentation page. This is a maker presentation or tutorial, not an independent reliability assessment; confirm the hardware and software revision.
Before you buy
Get these answered in writing by the seller. Tick them off as you go.
0 of 6 answered
Your checklist records your progress. A tick is not verification by ROBODROMO.
Sources and checks
A check date tells you when a source was read. It does not mean every claim, price or offer is unchanged today.
Sources and checks
03 / Recorded evidence
The latest checks on file.
Dates below describe the recorded checks. They do not mean the manufacturer’s page was checked today.
- store-jp.mirumi.tokyo Source checked 2026-10-27
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ux-xu.com
Manufacturer information: product specifications or FAQ.
Source checked 2026-10-26 - store-jp.mirumi.tokyo Source checked 2026-10-28
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store-jp.mirumi.tokyo
Shipping22–41; preorders follow separate dates
Source checked 2026-10-28 - ux-xu.com Source checked 2026-10-28
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Manufacturer specifications and support
Exact-model specification/support passages in official source; numerical claims are manufacturer figures.
Source checked 2026-10-31 -
Official page linking this video
Video association checked against the maker page; not a complete playback or performance assessment.
Source checked 2026-10-31
No recorded sources in this filter.
How sure are we?
7 linked sources. Read the claims and their limits below. A source count is not a confidence score.
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