Finally, Japan Post restarted EMS to USA. At the same time, they announced a tentative extra charge for EMS to Oceania, North America, Central America, the Middle East and Europe.
Notification of a Tentative Extra Charge for EMS
You can check what shipping method is available to your country from Japan Post’s international mail service availability chart as below.
Japan Post’s Announcements
Japan Post News
I can use DHL, but their shipping cost is more expensive.