Ryeowon (려원) is a South Korean singer currently under LCH Entertainment. She is a member of the girl group PRISM and a former member of Blady. In November 2013, Yeji joined Blady. She also released a song in their subunit Blady Soul before leaving the group in 2014. In 2016, she was a contestant on Produce 101. She was eliminated in episode 5 and finished in 72th place. In 2018, she debuted with a new girl group PRISM under the stage name Ryeowon. They released their first single, "Chok".