Okinawa THE ISLAND Okinawa is part of Ryukyu Islands (China Sea) it is fantastic crossroad between (Korea, Philippines, China & Japan) Old times Past centuries in Okinawa were marked by numerous invasions. 20th Century Major event of the 20th century was the drama of the Battle of Okinawa during World War II. Karate-Do Birthplace Real Martial Art Birthplace, in Okinawa Martial Arts practice is also a way of life.