The start is Secret! Hello, we are Secret! (The start is Secret! 안녕하세요, 시크릿입니다!)
”
—Secret
Secret (Korean: 시크릿; Japanese: シークレット) was a four-member girl group formed by TS Entertainment. They debuted on October 13, 2009 with their first digital single "I Want You Back".
They effectively disbanded in 2018 following Jieun and Hyoseong's departure and legal dispute with TS Entertainment, leaving Hana as the only remaining member.[1][2]