He Was Cool

Song Seung-heon

as

Ji Eun-sung

Jeong Da-bin

as

Han Ye-won

Lee Ki-woo

as

Kim Han-sung

Lee Jin-seong

as

Han Seung-pyo

Jeong Jun-ha

as

Homeroom Teach...

Park Yoon-Bae

as

Harassing Man ...

Park No-shik

as

Rabbit Seller

Kim Bo-yeon

as

Ye-won's Mom (...

Kim Kap-soo

as

Ye-won's Dad (...