This was inspired by portraits from the 1920's. I've read that some girls who adopted the flapper style only wore one earring because their hair covered the other ear.
Julia Ota, a Korean girl who was brought back to Japan during the Imjin Wars (1592-1598). She was adopted by one of the Japanese commanders, Konishi Yukinaga, and was baptized as a Christian in 1596. She eventually became a lady-in-waiting to Tokugawa Ieyasu, but was later exiled to Izu Islands for refusing to recant her faith. Wherever she went, she became admired for her charity and evangelism, and she was revered as divinity on the islands up after her death up to the 20th century.