A shima gwa is an island person. Shima is Japanese for island and the gwa comes from the Okinawan Hogen dialect. While it can mean either male or female it is most often used when speaking of the fairer sex. This little character is not anything I've seen from any Japanese manga but the figure can be seen at tourist traps all across the island. Note the Hibiscus flower in her hair. This flower is symbolic of Okinawa.