Yoon Seokhun Male The cold-headed litigation team leader at the major law firm 'Yullim.' Hyomin's boss. He has a blunt side but is a classic tsundere. He has an excellent ability to see through an opponent's mind in a short time. He gradually opens his heart to Hyomin, eventually sharing his dark past and deep sorrows. He likes Hyomin.

Han Seongchan Male Hyomin's ex-boyfriend. A young lawyer and leader of Corporate Litigation Team 1 at Re&Seo. He prioritizes reason, judgment, and logic over emotion and tries to act coldly. Hanseok's legal representative. He still has feelings for Hyomin. He gets secretly jealous.

Jung Hanseok Male The young and capable CEO of the mobile game company 'Marble Soft.' He is an object of envy with his handsome looks and solid wealth. He makes personal advances or tries to seduce Kang Hyomin, whom he met by chance at a bar. Whenever he sees Kang Hyomin, he lets her hair down; he is persistently clingy because he is romantically interested in her. He has sadistic sexual preferences.