One Harmony Inquiry
Please feel free to contact us if you have any questions, concerns or comments regarding our services. You may contact us by phone or by email inquiry form from our website (accessible from this website).
One Harmony :+81-3-6402-3388
- Inquiry by form : Monday to Friday, 09:30~17:30 (Closed Saturdays, Sundays and Holidays)
- Please understand that, depending on the nature of your inquiry, it may take some time to respond, and there may even be cases where it is not possible for us to respond.
- The inquiry will be answered by the appropriate department or supervisor.
- Those emails that reach us on our off-days will be attended to on our working days.
- Please do not reuse, reprint or quote our response, either in part or as a whole.
Many thanks in advance for your cooperation.