It was released on four UMD discs due to the large amount of video.
Compare the (like the "Bloody" vs "Happy" routes). school days hq psp iso
The "ISO" file mentioned refers to a digital disc image of the PSP Universal Media Disc (UMD). PlayStation Portable (PSP) Release Date: June 26, 2008 (Japan) Media Format: 1.8GB UMD (Single Disc) It was released on four UMD discs due