 In September 2012 , Square Enix announced Kingdom Hearts HD 1 @.@ 5 Remix for release in Japan on the PlayStation 3 . The collection would include both Kingdom Hearts Final Mix and Kingdom Hearts Re : Chain of Memories in high definition and trophy support as well as non @-@ playable HD event scenes from Kingdom Hearts 358 / 2 Days as a way for players to understand the story . The development team experimented with using some character models from Kingdom Hearts 3D : Dream Drop Distance for HD 1 @.@ 5 Remix . The cutscenes from Kingdom Hearts Final Mix , which were either unvoiced or used English voice acting , now use the original Japanese voice acting . Every cutscene from Kingdom Hearts 358 / 2 Days , whether it was originally a prerendered scene or used in @-@ game graphics , were remade for Theater Mode . 358 / 2 Days was originally planned to be an HD remade game , however , it would delay the development of the new title , so it ended up being within the compilation 's Theater Mode . 
