This work was produced for the “5th Karakuri Puzzle Idea Contest and was a limited edition piece”. Crafted in the shape of an origami crane, it does have a small secret space. The puzzle was designed by Kyoko Sueda and crafted by Akio Kamei in June 2013. While not a very complex puzzle, Kamei describes this puzzle as very difficult to craft. Made of Walnut and measures 220 x 130 x 120 mm. or 8.67 x 5.12 x 4.72 inches.