The lumber industry that supported Edo sashimono started with tradesmen employed in the construction of Edo Castle coming to have shops in Zaimoku-cho of Tokyo’s Nihomboshi. The skyrocketing of land prices in modern Tokyo did not allow room for lumber merchants to have property there to dry and store lumber for a long time after procuring. For such reasons, Kenji Suda’s workshop is located in Kanra Town of Gunma Prefecture. Lumber is slowly dried naturally in a warehouse and reborn as works of art by his hands when matured.