If you want Japanese audio with English subtitles (which is not an official combo), you must manually swap files.
It is crucial to know what you are actually getting. The "Definitive Edition" supports less audio languages than the original 2012 version. sleeping dogs definitive edition change language
Changing the language in Sleeping Dogs: Definitive Edition depends on your platform, as there is often no in-game menu option for spoken dialogue. PC (Steam) If you want Japanese audio with English subtitles