Current state:
active
"TST, shh! Hello, we are TST!" TST (일급비밀; formerly known/short for TopSecret) is a five-member boy group under KJ Music Entertainment. They debuted on January 4, 2017 with their first mini album Time's Up.
Korean: 아인
Korean: 케이
Korean: 요한
Korean: 우영
Korean: 정훈
Korean: 용현
Korean: 경하