Seo Hyun-Joo works as the leader of a webcomic planning team. She declares that she plans to remain single, but she receives confessions from two men: Hwang Ji-Woo and Park Do-Gyeom. Hwang Ji-Woo is the CEO of a pharmaceutical company. He has a cold personality and excellent business ability. Park Do-Gyeom is a popular webcomic writer. He is a sociable person. He and Seo Hyun-Joo grew up like siblings, but he has held a crush on Seo Hyun-Joo for a long time.

• Hwang Jung-eum
• Yoon Hyun-min
• Seo Ji-hoon
• Choi Myung-gil
• Jo Woo-ri
• Seo Hyeon-cheol
• Noh Susanna