This is a classic hard candy in Japan. It's been around for decades. The multi-colored candies come on a little tin with a stopper top. The design goes back to WWII. It's still popular. But, everytime I see the can, I'm reminded of that extremely sad animated war movie, "Graveyard of the Fireflies" by Miyazaki Hayao. The brother and sister enjoy the candies together, and in one scene, after all the candies are gone, they put water inside to make a sweet drink. That's the high point. It's all down hill from there.