Kingdom Hearts Birth by Sleep Final Mix is a reissue of the game that was released only in Japan on January 20 , 2011 . It has content from the English version as well as new features , such as a playable Secret Episode and a hint at a possible Kingdom Hearts Birth by Sleep - Volume Two - . The game was re-released exclusively to Japan under the name Kingdom Hearts Birth by Sleep Final Mix on January 20 , 2011 , with the content from the English versions as well as brand new features , such as a playable Secret Episode and a hint at a possible Kingdom Hearts Birth by Sleep - Volume Two - .