There is a hint to solve this work in the title. This work isn't difficult to open. After it rains, what do you do? When you open this box, you will find apretty character inside the umbrella!! Play with this on the carpet, please.
This work was produced by Karakuri Creation Group’s craftsmen, from selected idea in the “1st Karakuri Puzzle Idea Contest”

Original idea by Ayako Kunishima
Hand-crafted by Akio Kamei (Karakuri Creation Group)