Yoon Shi-yoonMr. Nice Paper Kim Jung-minHwang Dong-bae Jung Eun-pyoAhn Cheol-hwa Jung Hae-naWriter A-young Cho Jung-chi[So Hee's ex-boyfriend] Kim Hee-jungSo-hee's Mother Park Young-gyeChairman Park Young-kyu Yoon Seo-hyunChairman Park's Secretary Jeong Seok-yongSo-hee's Publishing Team Director Woo HyeonPrincipal Choi Woo-hyun Shin Hyeon-seung[Ji Gu's ex-boyfriend] 
