Q:

Do the NA releases of Radiant Historia, Kingdom Hearts 358/2 and The World Ends With You have dual audio (japanese)?

Can the NA releases of the following nintendo DS games be played with Japanese audio but english subtitles from in game settings? 

Radiant Historia
Kingdom Hearts 358/2
The World Ends With You

A:

None of those games can be played with japanese audio in their english releases:  

Radiant Historia has no voice acting so that wouldn't be an option.
Both Kingdom Hearts Days and The World Ends With You offer no such option.

