Why yes, it's a pokemon sticker and a chocolate cream wafer. Many small food releases are issued this way, mainly centered around anime. The sticker I have uses a refractive coating, but I'm not sure if it's special or they all come that way. And frankly, I don't care enough to try to find out.
How's the wafer? It's edible. There are better ones that I got packaged with other cards, but I think these taste just about as good as the ones I remember having as a child from the grocery stores in America.
And that gum? It still has some flavor left after writing out this entire post, so give it a bonus point for that!