During his time at Gaepo High School, Kang participated in sports but realized it wasn't his calling, leaving him unsure of his future path.

The story revolves around Mashkan, an eccentric professor with contrasting personalities, and Stephen, a pianist, who find solace and growth through music.

Set in Germany in the 1920s, it is a musical thriller that reveals the truth about four siblings involved in a fire and a mysterious murder that occurred in the mansion of renowned psychologist Dr. Gratzen, and the story of their missing nanny.

Kang and Jeon Sung-woo played the role of Hermann, the second child, a painter with a masculine and free personality, but lonely and easily shaken.

[5] The play Save the Earth, based on director Jang Jun-hwan's film of the same name, falls into the science fiction genre involving aliens.

Kang, Park Young-soo, Jeong Wook-jin, and Key in the main role of Byeong-gu, took turns performing at Chungmu Arts Center's Black Theater from August 10 to October 22, 2017.