On April 26, WJSN announced a new subunit called WJSN THE BLACK, composed of members Seola, Exy, Bona, and Eunseo. The sub-unit will make their debut with the single album “My Attitude” on May 12.
Source
@Ujung https://www.soompi.com/article/1466121wpp/wjsn-unveils-member-lineup-and-debut-date-for-new-sub-unit
Source
@Ujung https://www.soompi.com/article/1466121wpp/wjsn-unveils-member-lineup-and-debut-date-for-new-sub-unit