As you know if you've been reading this blog, AKB48 is the biggest J-Pop group in the world, and the fans can be downright insane. With great popularity comes great amounts of merchandise, found for the group as a whole as well as plenty of goods for individual members. What you see below is the AKB48 Trading Card Game & Collection Trial Deck. It's advertised as "Volume 1" though I've never seen a follow-up (this came out in 2012).
Here are the contents of the box. The card sleeves on the right (special ones with AKB48 logos!), and the cards on the left. I mentioned the three girls on the box cover are special: they each have one card in the box which can only be found here, and not in the booster packs.
I don't know how the game works. It involves an app of some kind, with codes found on the backs of the cards. I'll eventually get some help to explain this to you all! I also bought a full box of booster packs at a big discount, and I'm two cards away from a full regular set. Again, those full details will come at some other point in the future.