Bad Class (2015)

Ji Eun has a bad impression of men due to bad experiences with her father but her mom Hyeon Ah convinces her into getting tuition from an art student. Jeong Woo is surprised at how cold she is towards him but at the same time, there's tension between the two. Meanwhile, Hyeon Ah, who is afraid something might happen between the two, calls Jeong Woo in and suggests something but he confesses his love for Hyeon Ah instead. They have fallen into an inappropriate relationship and Ji Eun decides to give her mom a surprise.