PC version Fans have made a PC version. Some are still early, so read the project page first.
Fans took Kingdom Hearts 358 2 Days apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here are the 2 projects we know about:
Experimental native PC runtime for Kingdom Hearts 358/2 Days, developed alongside the matching Nintendo DS decompilation. No copyrighted game data included.
Complete matching decompilation of Kingdom Hearts 358/2 Days (Nintendo DS), byte-identical to the game.