Hi. My name is Hiroyuki Oka. I'm a Japanese puzzle box craftsman.
1970 birth at Odawara, Japan.
Graduation from the Musashino art college.
I had training for 10 years and I'm crafting these Japanese puzzle boxes for 20 years.
My workshop was founded in 2003. A studio name is OKA CRAFT.
Please enjoy my puzzle boxes. Thank you.