Ryu Sera

Ryu Se-ra, also known by the mononym Sera, is a South Korean singer-songwriter signed under the self-founded agency OCTO. She is a former leader and main vocalist of South Korean girl group Nine Muses. From Wikipedia (https://en.wikipedia.org/wiki/Ryu_Se-ra) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/b...)