High School King of Savvy

Seo In-guk

Lee Min-seok / Lee Hyung-seok

이하나

Jung Soo-young

Lee Soo-hyuk

Yoo Jin-woo

이태환

Oh Tae-seok

강기영

Jo Deok-hwan

Lee Yul-eum

Jung Yoo-ah

Oh Kwang-rok

Choi Jang-ho

권성덕

Choi Man-seok

Cho Han-chul

Kim Chang-soo

Kim Won-hae

Han Yeong-seok

Park Soo-young

Yoon Dong-jae

이주승

Ji Dae-han

Shin Hye-sun

Go Yoon-joo

최필립

Park Hong-bae

송영규

Nam Sang-Koo

한진희

Yoo Jae-guk

Ji Yun-ho

Park Ki-hoon

Lee Jung-eun

Soo-young's mother