Apr 25, 2019-present
Bitna (빛나; formerly known as Seungah) is a South Korean singer under BOD Entertainment and MY Entertainment. She is the leader of the girl group Sunny Hill.
Originally using the stage name Seungah, she debuted as a member of Sunny Hill on September 20, 2007 with the group's first single "Love Letter".
Coinciding with the group's return to activities, on April 25, 2019, it was announced she would be promoting under the new stage name Bitna.