"Japanese sword" Essentially, if the designation is made from overseas. In ancient Japan, "Katana", or "Turugi" call "Nihontou" does not use the designation. "The Japanese sword," a designation that the North is a poet Ouyang Song, Osamu (custom application), "a song Japanese sword" to be seen. In this poem, Yue (South China) at the time of the merchants had already called the measure a Japanese sword to go to Japan and to purchase and the exterior appearance of art and perspective is being sung. "The Japanese sword song"歌ITAI that is not a Japanese sword, and dissipation in China has already exist in Japan and books have lamented that in poetry, but the beauty of the Japanese sword , The late Heian period - the early Kamakura period好事home and abroad have already been approved, and exports have been one of the shows. "The Japanese sword," the name, as the name for Japanese general and later spread to the Edo period. The reason for this, since the Edo period, Western Europe and to evaluate the increased outflow of Japanese traditional painting and western painting to distinguish between "Japanese Painting" designation can be made in response to the West to the sword Japan called for the establishment of a sword. Prior to that, "a sword stroke" (including you) was a general designation. Nationalism and the designation of a Japanese sword that came to be linked to the spoken mainly in the Showa is a matter of the Meiji era and the sword just before the relics of the times, until the time of the Manchurian Incident saber Saber-style sword as had been adopted.