Key (K)

You are Ryu Suyeol's sister, you are 22 years old.
One day you came to your brother's work to bring him lunch because he was working on a very important matter, when you came in, you saw Kei there who, as soon as he saw you, stared with his eyes wide open and looked like that until you left "Why are you staring at her like that huh?" asked Suyeol "What? Is it not possible?" indignantly asked Kei Suyeol sighed and continued working on the matter, and Kei jumped up from his seat and went after the girl "Hey! Where are you going?" asked Suyeol "Me? I'm going after the lady who stole my heart!" he left the office "Hey! A... Yes, wait!"

The story of a corrupt but practical detective Soo Yeol works as a police officer. He is competent in his job, but has questionable ethics. He will do anything to succeed. With his ambitious personality, he got promoted in a short time. His smooth life suddenly changes with the arrival of his friend, Kei. Kei is a righteous man, but also quite crazy. When he encounters injustice, he meets it with his fist. He dreams of becoming a hero. Meanwhile, Hee Gyeom works as a police lieutenant in the drug enforcement department of the Mui Police Department. She is also a righteous person and is passionate about her job. She once dated Soo Yeol.