Yoon Jin-seo

Kim Ga-in

Lee Ki-woo

Hyung-joong

Park Ki-woong

Hong Seok-min

Kim Min-kyung

Ji Seon-mo

Yeon Je-wook

Choi Sang-gyeong

Jeong Yu-mi

Lee Myeong-hee

Kim So-eun

Kim Ga-yun

Ahn Nae-sang

Ga-in's Teacher

Jeong In-gi

Detective Jo

Ahn Shin-woo

Hong Jae-sun

Kim Jin-geun

Hwang Dae-yong

Kim Do-yeon

Kim Mi-joo

Jeong Wook

Hyung-joong's Father

Kim So-eun

Kim Ga-geon

Oh Yeon-seo

Chung Eun-gyeong

Jeon Kuk-hwan

Ji-sun's Father

Jo Yeon-hee

Kim Ji-sun

Baek Joo-hee

Hyung-joong's Mother

Lee Kan-hee

Ga-in's Mother

Seo Yu-jeong

Ga In's youngest aunt

Kim Soo-woong

Adult Relative

Park Seoung-tae

Dae-yong's Mother

Lee Sae-byeol

Visitor

Kang Lee-seok

Young Park Hyun-joong

Park Sin-woo

Ending Student