Normal for the moment we can not change the language in libretro citra, but when we have the CITRA interface in Batocera we can. For the moment I use this file in CITRA under Windows in the folder C: \ Users \ Your PC name \ AppData \ Roaming \ Citra then you change the language, your name in CITRA PC and the definition and you transfer the files in \ batocera \ share \ saves \ 3ds \ Citra