These look just like the same common chocolate stuffed biscuit, but they are not. They have a rice like coating which makes the taste different to anything I have had so far. Also mixed in the coating are black sesame seeds. The coating isn't sweet but has a more savoury taste and with the combination of the sweet, creamy chocolate, this is something else. They are a bit on the dry side, but because the chocolate is more liquid, this evens out nicely. As for the black sesame: I find that taste coming through in a subtle way and I notice it more in the after taste. I have to say that I did have to get used to the taste, but I do like them.
You can buy a package on J-list for $3,50.