PC Software: I Am an Air Traffic Controller 4: Narita Airport (Boku Kan) This is a used copy of the packaged version. The contents are as follows: * DVD disc * Airport Guide * Instruction Manual * Serial Number Card The serial number and online ID required for installation are listed on the card, so please enter them as shown in the fourth image. I have confirmed that the installation was successful and that the game can be launched. It has been uninstalled from this PC. The online ID and serial number are linked, and the game is designed to 【only work on the last PC it was installed on】. Therefore, the PC needs to be constantly connected to the internet. I am also selling other items from the same series, and I will offer a discount for those who purchase multiple items.