This is one of the works that were developed for the cause of the concept to"make works associated with Odawara and Hakone".
In Odawara, there arefishing ports and we can have fresh marine products. "SUSHI" is a famousfood of Japan. The idea of making "Karakuri SUSHI" has appeared repeatedlyamong Karakuri craftsmen, but, it has never been made. If you know thesolution, it isn't difficult to open. Please find two spaces inside. Thehints are "how to eat" and "how to hold" them.