Our Sunhi (2013)

Sun-hee (played by Jung You-mi), a beautiful and intelligent but introverted film school student, returns to school after diving for a long time. She plans to study abroad, so she asks Professor Cui (played by Kim Sang-joong), who admired her most at first, to issue a letter of introduction. Because Sang Woo (played by Lee Min Woo) lied to her that the professor would not go abroad...