Whistling Princess

Ji Sung

Jun-ho

Kim Hyun-soo

Ji-eun

Park Sang-min

Seok-jin

In Gyo-jin

Soo-il

Sung Ji-ru

Sang-chul

Lee Hyeong-cheol

Roy

Jang Kwang

Yoo Chae-young

Jang Nam-yeol

Waiter

Lee Kwang-gi

Jong Kil

Jeon Won-joo

Female owner of rooftop room

Kang In-ki

Gyeong-soo