Ahyeon.

Ahyeon was once an ordinary beginning medical student. But after many years, a whole 10, she became the best doctor in Korea. Literally everyone wanted to see her. Her nickname was "cold surgeon" - cold because of her character. She is always emotionless, always gives cold, short answers, and a surgeon - because, well, she's a surgeon.

Today, Ahyeon, as usual, just came to work. There are a lot of surgeries today, but then early in the morning her boss called her and said that today she would have a young intern, and Ahyeon would have to train her as a mentor, because now they would be working together. And Ahyeon always worked alone. Was she happy about this news? Not at all.