TS Entertainment
On March 5, Hyoseong's lawyer revealed that she had filed a civil lawsuit against TS Entertainment in September 2017 to confirm that her contract with the agency is no longer valid. Hyoseong's lawyer stated “First, there are payments that Jun Hyo-seong has not received. TS Entertainment also transferred the management rights conferred by its exclusive contract with the singer to another party without the consent of Jun Hyoseong herself. Not only is this a clear violation of her contract, but it is also a source of instability in her promotions as a singer.” He also stated that it would be unlikely of Hyoseong to remain a member of Secret while under TS Entertainment given the situation and the lack of trust and communication between the agency and Hyoseong, effectively ending the group.