Board Thread:Questions and Answers/@comment-26574261-20150817141316

I've recently heard of the llsi diaries and would love to buy the ''Love Live! School idol diary ~Aki no Gakuensai ♪~ book, which includs a code for this'' card. But I read that the codes aren't usable anymore. Is it true that I can't use a code anymore from one of these books?

Thanks for your help! :) 