Kyoshi Island
Kyoshi island’s culture is clearly based on Japan.Starting with 京 being pronounced kyo (Chinese pronunciation: Jing) to the Kendo inspired clothes the Kyoshi warriors wear, the Japanese war fans and the presentation of the food.
Japanese Studies are not my area of expertise, so while I have seen some of the imagery used in clothing, architecture etc around, I have little to say on it and will leave an in-depth comparison to others.