As I mentioned in my review of the Meiji Rich Matcha bar, Meiji is the authority on matcha chocolate. Matcha Meltykiss (or Meltyblend, as I think it's now called) is the buttery, sweet epitome of matcha chocolate. It's another candy that seems to only be out in winter, but it's worth the wait.
Each box contains plenty of individually wrapped chocolate cubes. To be more specific, they are matcha white chocolate cubes coated in chocolate with a powdery cocoa finish. Even though they are small, you'll want to savor them, believe me. The inner matcha white chocolate is delightfully smooth, silky, buttery, and rich.
There are other flavors of Meltykiss/blend but the matcha really shines. It's just strong enough to have a true green tea flavor, but not so strong as to scare the hesitant. This is one of my favorite candies of all time, and it makes a great souvenir for family and friends. It's just so hard to give them away....
Meiji Website (Japanese)