The translated title of this video alludes that it was Suzuki Jitsukun’s graduation project from Miyagi University, circa 2015 – and it’s awesome!
Translated from the Japanese-language description using Google Translate:
Gimmick is hidden to the inside without being exposed to the human eye. Similarly, traditional crafts that secret box. The box to open by moving some of the contraption like a puzzle has been devised in order to hide the valuables from thieves. So that it does not interfere with its function, trick is you need to hide on the inside of the box. However, trick without touching the eyes of such people what, I think in a real thrill of the secret box. I decided to exposing the hidden trick, dare to the human eye.