Top 13 in Top 13 boldest 18+ Korean movies in Asia.
Trailer: Innocent Thing (2014)
The movie revolves around an awkward teacher-student relationship. Joon Ki (Jang Hyuk) is a well-known gym teacher at a girls' high school who is married and expecting his first child. However, while saving the drowning young girl, Young Eun (Jo Bo Ah), Joon Ki was tripped by her student's flirting. Faced with the powerful allure of Young Eun, Joon Ki is gradually overcome, making his long-sleeping heart suddenly flutter again. But Joon Ki begins to panic because of her student's obvious "attack". Young Eun's jealousy and extreme actions endanger Joon Ki's wife, forcing him to choose between the two, resulting in a tragic ending.