Ruby Ring (Korean: 루비 반지; RR: Rubi Banji) is a 2013 South Korean television daily drama series starring Lee So-yeon, Im Jung-eun, Kim Suk-hoon and Park Gwang-hyun.

When Ruby announces her engagement to Bae Kyung-min, the jealousy Runa harbors for her sister sharpens: it has always been her dream to marry a rich man, but instead she remained pregnant with her boyfriend Na In-soo.

Since Ruby's engagement ring and clothes are found on Runa, doctors reconstruct their faces swapping them.

Runa has now the opportunity to live as Ruby, who, when she wakes up from a coma and discovers what her sister is doing and that In-soo, while knowing the truth, is not going to do anything, plans revenge.

[5] An Indonesian adaptation of the series called Bawang Putih Berkulit Merah.