He worked on the script for 2 years, changing almost everything in the first draft but the film's basic framework.
Produced by Myung Films and distributed by Lotte Entertainment, the film was released on September 16, 2010 and ran for 121 minutes.
Lovelorn Kim Hyeon-gon (Song Sae-byeok), who has fallen for coffee shop worker Seon-ah (Ryu Hyun-kyung), learns about Cyrano Agency, a small organization set up by theatre actor Lee Byeong-hoon (Uhm Tae-woong) that claims 100% success in making people fall in love.
He knows the difference between genuine witticism and crude slapstick that passes for 'comedy' in so many recent movies" and describes the film as "a deft, clever crowd-pleaser that is also a genuinely lovely motion picture, the kind of Korean cinema undeservingly ignored in the foreign market, and another winner from the redoubtable Kim Hyun-seok." A digital album was released on September 7, 2010 which featured two songs recorded by the movie's four stars, along with respective accompanying music videos.
The song "당신이었군요" (It Was You) was a light ballad by Park Shin-hye and Lee Min-jung.
In 2005 veteran director Bae Chang-ho mentioned to Kim the script's similarity to the play, so Kim decided while retooling the script in 2007 to overtly reference Cyrano de Bergerac—turning the characters into a theater troupe, and setting the lovers' flashbacks in France.
Kim candidly admitted that he cast the four main actors because their previous TV dramas had been popular, and he wanted to use the momentum from their recent successes.
Their next client is fund manager Lee Sang-yong (Choi Daniel), who has fallen for Kim Hee-joong (Lee Min-jung), a young woman he met at church.
Byeong-hoon is not keen on taking the case, as it turns out that Hee-joong is an ex-girlfriend of him.
It is the fourth installment of cable channel tv N's "Oh!
Boy" series of Flower Boy programming targeted at the teenage demographic, following Flower Boy Ramen Shop (2011), Shut Up Flower Boy Band (2012), and Flower Boys Next Door (2013).
Using his masterful stage skills, he forms the Cyrano Dating Agency.