User blog comment:Hakuryuu12345/Help in Inazuma Eleven Go Strikers 2013/@comment-5541483-20121229082105/@comment-5262822-20121229160548

The friend code is under the game options in the Wi-Fi mode. So, under the icons that you use to see the classification, to play a Wi-Fi match or to see your friend list, will appear a lot of  numbers. That´s your friend code.