Raina is a South Korean singer who debuted in 2009 with ‘After school’ second single "Because of You." In 2010, the trio's global unit "Orange Caramel" received a lot of love for all the songs. In February 2012, she released the OST "Self-illumination" of the KBS drama "Self-illuminating Her" as her first solo song, and in June 2014, she reached the top of the music chart with a project "A Midsummer Night's Honey" with rapper San E. She is active in various fields such as music activities including writing and composing, personal broadcasting and YouTube channel operation, radio DJs, and musicals.