TST, formerly known as Top Secret (Hangul: 일급비밀; RR: Ilgeobbimil) is a South Korean boy band formed by JSL Company in 2017. They debuted on January 4, 2017, with Time’s Up.
On May 31, 2018, it was reported that Kyeongha was found guilty for sexual assault. The victim stated that Kyeongha told her that she aroused his sexual desire while walking on the sidewalk, and when she ran away from him, he followed her into a building and sexually assaulted her. He received a prison sentence of 18 months in prison, with a probation period of 3 years, along with 40 hours of treatment program for sexual offenders. Kyeongha and his agency, JSL Company, denied the allegations and filed for an appeal on May 29.
After news broke out, M Countdown decided to cancel Top Secret’s appearance on the show.
On June 11, it was announced that Kyeongha left the group.