It's Been Awhile, Shall We?

Never in my life had I felt bad luck… Until now… The editor-in-chief at my new company is the ex-boyfriend I had a bad breakup with?!
The scruffy looking Ah-jun that disappeared long ago has now changed completely. Since his first day on the job, Shin had been suffering from Ah-juns harassment overtime. In a fit of anger, he has a one night stand with someone else then heads to work. But seeing Shin, Ah-jun begins to feel mixed emotions.