Contact the Consulate-General using the following number (84-8)8225314 or try going to the institution yourself at 13-17 Nguyen Hue, District 1, Ho Chi Minh City. Japanese e-Visa is available without the need to visit an Embassy. Spare a few minutes and apply anywhere at any time using your phone, laptop, or any other device!
Visa to JapanJapan Electronic Travel Authorization