Skin (2016)

Dong-wook is on his first day of work and finds out there's only the female owner and the female team manager in the office. The team manager Mi-ran claim everyone's gone on vacation and shows Dong-wook his seat. However, Dong-wook is surprised at the way she approaches him. They secretly have sex in the office. Later, he has a talk with Eun-min the owner and she tells him to be good to her if he wants to keep working there. Then she asks him for a massage. Now, Mi-ran and Eun-min start to bully him in the most peculiar way.