This is the 5-inch version of the PC-9801 game software "DE・JA". I've played the game through to the ending. (I played it by copying it to a 3.5-inch disk. Either my 98's drive is bad, or I got an error when saving once, so just in case, it might be better to use a copy of the A disk. You can copy the disks normally.) It seems I've lost the secret card, so it's not original. The disk labels were damaged, so I made my own. (The 8th photo is the original.) I'll also include the 3.5-inch disk I used for the game. (You can play the 3.5-inch version even without the secret card.)