In 1924, Japan fielded a full contingent of 25 to the 2nd World Scout Jamboree in Denmark. Sano was a participant, during which time he attended a Wood Badge course at Gilwell Park, marking the watershed for the first period of Japanese Scouting. Sano returned to Japan and created Japan's own training course at Lake Yamanaka, near the base of Mount Fuji, called Jisshu-sho, for both Cub and Scout leaders. The course is still used to this day, after completion of two preliminary courses, Koshu-kai and Kenshu-kai.