He is Psychometric [Portuguese]

Park Jin-young

Lee Ahn

Shin Ye-eun

Yoon Jae In

Kwon Kim

Kang Sung Mo

Kim Da-som

Eun Ji Soo

Go Yoon-Jung

Kim So Hyun

Jung Hyun Noh

Lee Dae Bong

Choi Deok-moon

Witness

Kim Won-Hae

Math teacher

Jung Young-joo

Youngseong Apartment President

Hayden Won

Younger Keun Taek Kang

Jo Byeong-gyu

Kang Sung Mo (young)

Kim Soo-In

Young Yoon Jae-In

Lee Jong-hyuk

Lee Ahn's father

Choi Jae-Hyeon

Student

Jeong Ji-Hoon

Sung Mo (young)

Kwon Hyeok-soo

Judge

Lee Seung-joon

Kang Geun-tae