Thank you for writing back to Customer Support regarding the registered name.
First of all, I apologize to know the reason of changing the name, I also can understand that you being a Japanese citizen and it would be not easy to share the document in English language.
I would like to suggest you to kindly help us with the at least one supporting document in English language, also you can send the name which you have on the POI document to be translated in English language, so as we can help you accordingly.