Yoo Se-mi (Yoo In-na) is Song-yi's childhood best friend who has had a crush on Hee-kyung since middle school. Realizing her love is unrequited, Se-mi ultimately gives up on Hee-kyung and starts to focus on her career as an actress. As Jae-kyung tries to silence Song-yi, Min-joon finds himself saving her multiple times, and eventually, the neighbors fall for each other. But Jae-kyung turns out to be much more dangerous than Min-joon suspected, as he hurts Se-mi's older brother, who is investigating the murder of an actress in which Jae-kyung is actively involved, and Min-joon also mysteriously starts to lose control of his powers. "My Destiny", the theme song of the drama performed by Lyn, received positive reviews in South Korea and peaked at number 2 on the Gaon Music Chart. The show is written by Park Ji-eun, directed by Jang Tae-yoo, and produced by Moon Bo-mi and Choi Moon-suk under the banner of HB Entertainment. As the protagonist of the series possesses superpowers, like the ability to teleport and stop time, special effects had to be employed. The crew used 60 small, special cameras for bullet time effect creation. The GoPro camera was installed in 180 degrees and "stopped" characters were filmed from various angles. The final scene is a montage of various smaller details and then enhanced digitally. This was the first time that HD cameras were used to produce a television series in South Korea. Among the filming locations were two newly built luxury buildings, Dongdaemun Design Plaza & Park (DDP) and Boutique Monaco. The Korea Tourism Organization later held a 3D exhibit at the DDP Art Hall from 10 June to 15 August 2014 which featured one of the house sets used, with the display rooms titled "Start," "Fate," "Shaking" and "Longing" in line with the plot of the drama. The series influenced Korean fashion, with clothes, accessories and make-up products worn by Jun Ji-hyun seeing an "unprecedented" surge in orders. It also placed first as "Korea's most favorite program" in a poll conducted by Gallup Korea in February 2014, with 11.5 percent of the votes. "The Miraculous Journey of Edward Tulane" by Kate DiCamillo, a children's novel, was propelled to the top of the bestseller lists in major Korean bookstores after the male protagonist repeatedly quotes from it throughout the series.