This work is the first collaboration between Kagen Sound and Akio Kamei.
First Kagen made the outer box and the sycamore box, and then Kamei made
the cherry tree box.
The mechanisms of these two boxes are linked.
First of all you have to open Kagen's box.
If you can't open it, you can't open Kamei's box.
This box is a limited edition for this time only.