Oshima Joun was a master metalsmith noted for his expertise in the technique of lost-wax casting. He participated in many national and international exhibitions, winning a gold medal in the International Exposition, Paris, in 1900.
The ashura belong to a class of eight Buddhist guardian deities that evolved from Hindu mythology. Ashura symbolize the fighting demons, and are associated with force and violence. They rank above humans in the Buddhist hierarchy, but below most of the other gods.