One Harmony Inquiry
Please read the FAQ page, or contact us by phone or email inquiry form below for any questions, concerns or comments .
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.