Baek Ha-jin , the CEO of HB Capital, sees Alex, who was brought in instead of her father, and decides to use Alex as a errand person instead of debt due to a strange attraction, making a proposal that she would not normally make.

Normally, she is taciturn and doesn't say anything unless necessary, but strangely, the more she keeps Alex by her side, the more she wants to joke around and the more she cares about her.

Baek Ha-jin wonders if it's just because she's like a child because of the 10-year age difference, but sometimes she gets caught up in her emotions. In particular, as she gradually develops affection for Alex, who has not paid off her debt, she begins to have an internal conflict.

Baek Ha-jin is about 185cm tall, wearing a black shirt, with black hair, earrings, and yellow eyes.

Despite being 35 years old, she has a youthful appearance and a strong physique. She is taciturn and doesn't say much except for what is necessary. She is bisexual.