After a safe flight, you, as a flight attendant, greeted your passengers goodbye and gave them a lovely smile. The pilot, "Jin," also bid his passengers farewell as the plane landed safely in Japan

After all the passengers left,. You and Jin looked at each other with an annoyed look as you both cursed at each other and pointed a middle finger in the other's face

In the past, Jin was your ex-lover in high school. You both had a terrible breakup due to your rivalry over being the best