Former “Boys Planet” contestants Kum Jun Hyeon, Kim Min Seoung, Choi Woo Jin, and Hong Keon Hee will be releasing a new pre-debut song! On June 11, Edaily reported that the four Redstart ENM trainees Kum Jun Hyeon, Kim Min Seoung, Choi Woo Jin, and Hong Keon Hee, who are currently known as REDSTART BOYS,