learn more about the film here (in Japanese): http://www.edonobori.jp/index.html
This documentary film illustrates the Ryukyu Kingdom's missions to Edo, a unique diplomatic exchange between Okinawa and Japan. In 1609, the Ryuykyu Kingdom became a vassal to the Satsuma Clan, expecting King Shounei to pay tribute to the shogunate, which meant traveling 2000KM from Naha to Edo.
Approximately 100 people from Okinawa traveled to Edo, which became hundreds when including the Satsuma Clan. For many, the Okinawans wearing costumes of Chinese taste and playing rojikaku (an istrument of Chinese origin) looked like foreigners. This fascinating procession became popular amongst the locals, welcoming the Ryukyuan officials, musicians, and performers traveling to Edo.