This is a single CD included with the anime mook "Choujin Gakuen Gokaizer Official Guidebook." This is a CD Video product. It cannot be played on CD or LD players. Please use a CDV player. *Currently, I do not have a CDV player, so I have not been able to confirm playback. (I was able to play it two years ago when I had a CDV player.) *There are some scratches on the back. Please consider the above before purchasing. Returns and exchanges are not accepted.