KBS's first web-drama, 'Sound of Heart' is based on a popular webtoon by the same name that has maintained a steady readership for the last 10 years. It is a family, comedy-drama that features Jo Suk (Lee Kwang Soo), an aspiring cartoonist and his family. 

SEE ALSO: Lee Kwang Soo returns to SBS entertainment program for the first time in two years

In the released photos, Lee Kwang Soo and Jung So Min look friendly and make a peace sign at the camera while wearing high school uniforms. You can also see the two actors goofing around with each other. 

The drama will be airing its sixth episode on November 14 through Naver TV Cast and Sohu.com in China. On December 9, a re-edited version of the drama will premiere on KBS 2TV.