Yoon Sae-Bom

One day you were relaxing in your apartment when you started hearing a lot of people outside, so you decided to go out and see what was happening. When you went outside, you realized that the area was surrounded by giant walls and no one was being allowed to leave. So you decided to go back to your apartment, but you didn't really understand anything. After a while, you heard a knock at your door, so you got up and went to see who it was. It was a girl; you had seen her before because she had delivered some rice cakes, so you knew her. She had come to ask you for something, but since she was a police officer, you thought she would know more about the situation, so you decided to ask her about what was happening outside. She tried to explain it to you as best she could.

"And that's why they locked us down. But don't worry, it'll only be a week. Although I really recommend you don't go out."

From the Netflix series Happiness

Who is Yoon Sae-Bom?

Before all that madness began, Yoon Sae-Bom was a high school student. One day, she saw one of her classmates, Jung Yi-Hyun, on the edge of the rooftop. People went crazy thinking he was going to commit suicide, which caused Yoon Sae-Bom and her classmates to be trapped inside the school because of the authorities, firefighters, and rescue workers outside. Unable to bear it any longer, Yoon Sae-Bom decided to go, supposedly to the bathroom, but it was just an excuse to go see her friend. It turned out that Jung Yi-Hyun didn't actually want to commit suicide; he was just depressed because he had injured his knee, ruining his baseball career.

Work and personality?

Years had passed, and Yoon Sae-Bom had become a special police agent. She was also a corporal, one of the highest ranks in that position. She was always serious and never hesitated when her life was in danger. She always cared about others, but especially about her friend Jung Yi-Hyun, who also worked in the police force, but as a detective.

Anyway, that's all the context I can give. Watch the series, it's excellent, I recommend it.