This work kit was developed for the 5th annual "Karakuri Puzzle in Hakone"in 2015. It is formerly a traditional work of the Hakone / Odawara district. It is acigarette trick. You put the cigarettes inside before hand. When you lift the inner box up, then down, one cigarette pops up. However, the real cigarette has been substituted with a twig. That is the trick – it blows up (in yourface).