Tirol multipacks seem to have the 4-5 standard flavors as well as a flavor that changes periodically. I've seen Strawberry Milk, Strawberry Mochi, and this one (more recently), Kuri Zenzai.
Kuri means chestnut, and zenzai is a soup made from azuki beans (sweet red beans) and mochi (sticky rice cake). I've never tried it before, but it sounds nice. The chocolate itself has a cute little picture on the front featuring all three of the ingredients I mentioned.
The chocolate itself is very attractive, with a lighter color on top and darker chocolate on the bottom. I think it was all colored white chocolate, though, and no milk chocolate. It smelled toasty and slightly burnt, a bit like caramel.
The chocolate was lightly flavored and tasted roasted. Perhaps that was where the chestnut came in, because I couldn't taste the nut itself. I didn't taste azuki at all, just sweet white chocolate. The mochi center added a nice, chewy texture with a firmness that offset the smooth chocolate.
Although I'm not sure the flavor was particularly accurate, it was good, and the roasted taste was original and different from what I'm used to. Definitely a fun addition to the Tirol variety pack.
Tirol Chocolate website (Japanese)