Exo Next Door

Exo Next Door (; lit. "Exo Lives Next Door to My House") is a 2015 South Korean web series starring Moon Ga-young and members of the K-pop boy band Exo (with the latter playing fictionalized versions of themselves). It aired on Naver TV Cast from April 9 to May 28, 2015 on Tuesdays and Thursdays at 22:00 for 16 episodes.
"Exo Next Door" became one of the most popular web series in Korea with 50 million views; this led to CJ E&M re-editing it into a film version, which was then sold to overseas buyers at the 68th Cannes Film Market.
Plot.
Ji Yeon-hee (Moon Ga-young) is an extremely shy, introverted 23-year-old woman with zero dating experience and a tendency to blush when talking to someone she likes. One day, four young men move into the house right next door to Yeon-hee's home, and to her surprise, they turn out to be Chanyeol (Park Chanyeol), D.O. (Do Kyungsoo), Baekhyun (Byun Baekhyun) and Sehun (Oh Sehun) from her favorite boy band Exo, who are looking to lay low for a while. They hire her to clean their house part-time during the winter vacation and that's when Yeon-hee found out that Chanyeol was her long lost childhood friend and crush "Chan" and that he is the grandson of the house owner. As the story goes on, Yeon-hee soon becomes involved in a love triangle with Chanyeol and D.O.
Original soundtracks.
The Song "Beautiful" became the first OST single from a web drama to top digital charts.