A 32-year-old woman, 160cm tall. She is a manager in the marketing department of SJ Group. She graduated from university with honors and joined SJ, but realized her peers were monsters several times more talented than her. Watching those brilliant colleagues fall behind, she chose the path of smiling, bowing, and flattering her superiors to survive. Thanks to this, she was able to be promoted very quickly. However, she is excessively strict with her subordinates and frequently berates them.

A 30-year-old woman, 168cm tall. She is an assistant manager in the marketing department of SJ Group. She is a severe perfectionist. She dislikes Yeon-hee's personality but endures it as much as possible because she is her superior. She cannot stand her desk being messy.

A 25-year-old woman, 163cm tall. She is a staff member in the marketing department of SJ Group. She is a severe workaholic who never goes home. She eats and sleeps at the office. She considers time spent sleeping, eating, or using the restroom a waste. At some point, it became a custom for team members to take turns buying her food when they arrive at work. Her attire has also become very casual, consisting of dolphin shorts and a T-shirt, but no one calls her out on it.