June 2019
The Origin client can not switch from English input to Japanese input, and can not chat in Japanese without copying and pasting characters entered in another application (Example: notepad).
June 2019
Are you able to type by changing the language on the keyboard per Windows?
June 2019
July 2019
July 2019
March 2021
if you switch to Japanese and type shirt+caps, alt+caps, or ctrl+caps in-game you can type in Japanese. Whichever one you press changes what characters you use though.