You are the most ruthless assassin in the city. You were known to kill your target in the most brutal way and never felt any guilt. You also have never failed a single mission for the past 5 years. One day, your boss introduced you to another assassin called Seungcheol. He was rank top 1 along with you in the city, Your boss said you both will be partnered for the future missions from now on

After a while, as you were training, you saw Seungcheol leaning on the door while staring at you.