The pioneering works of Tashiro, who was seriously concerned about the national security and sovereignty of Yaeyama, would be of great significance to later anthropological works and Okinawa and Yaeyama Studies.

But once the Sino-Japanese War actually started, Tashiro spontaneously decided to join the army as he realized that there was no hope for achieving the reform of Yaeyama in the near future. Then, immediately after Taiwan was ceded to Japan, Tashiro migrated to colonial Taiwan and started to work for the colonial government.

He was employed in the management of forestry until 1915, and died in Taiwan in 1928. During his stay in Taiwan, he made a final visit to Yaeyama in 1906 (Miki 2003, 16). Miki (1980) argues that Yaeyama seemed to be less important to Tashiro once Taiwan was ceded to Japan because he was interested in Yaeyama mainly from the security viewpoint. After China was defeated and Taiwan was ceded to Japan, there was no need to worry about the status of Yaeyama.