Pyramid Game

Bona

Seong Su-ji

Jang Da-ah

Baek Ha-rin

Ryu Da-in

Myung Ja-eun

Kang Na-eon

Im Ye-rim

Jeong Ha-dam

Ko Eun-byeol

Ha Yul-Ri

Bang Woo-yi

Hwang Hyun-jung

Kim Da-yeon

Shin Seul-ki

Seo Do-ah

Lee Ju-yeon

Shim Eun-jeong

Oh Se-eun

Song Jae-hyung

Song Si-an

Oh Sung-a

Son Ji-young

Ra Hae-jun

Kim Se-hee

Pyo Ji-ae

Choi Yoon-seo

Koo Seol-ha

Lee Da-kyung

Yoon Ye-won

Kwon Yi-soo

Joo Seung-yi

Kim Ye-na

Jung Yeon-doo

Lee Gyu-seon

Park Ji-young

Kim Ji-an

Cho Yu-rim

Kwon Tae-hee

Shin Shin-ye

Yoon Na-eun

Choi Yu-hyun

Do Ji-woo

Cha Seon-ju

Jo Woo-mi

Do Mi-young

Baek Seo-ha

Lee Bo-hyun

Jeong Ji-soo

Yang So-young

Joo Bo-young

Cho Woo-ri

Son Ji-na

Principal Im Soon-ae

Ahn So-yo

Yoon Na-hee

Jeon Sa-ra

Teacher Choi

Kim Bi-bi

Teacher Hong

Cho Yu-jin

Teacher Ahn

Lee Si-young

Teacher Park

Baek Cho-a

School Nurse

Choi Seong-won

Teacher Im Ju-hyung

Jeon Jun-woo

Teacher Jeon

Cho Dong-in

Jo Seung-hwa

Choi Dae-chul

Sung Hee-suk

Nam Gi-ae

Byun Cho-soon

Kim Young-pil

Baek Hyun-joon

Jung Ae-yeun

Choi Yi-hwa

Seo Kyung-hwa

Kang Sun-hee

Lee Chae-been

Myung Ja-eun (child)

김소운

Ko Eun-byeol's Mom

Jung Seung-kil

Seo Joong-yeon

Jeong Gi-seop

Kim Byung-oh

Song A-kyung

Kim Da-yeon's Mom

Jang Ui-don

Hong Sang-gu (eps 6)

Lee Se-rang

Sang-gu’s Wife (eps 6)

Yang Ha-yoon

Reporter (eps 9)

Uhm Tae-ok

Military Officer (eps 9)

Jang Gyu-ri

Lee Soo-min (eps 10)

Won Geun-su

Judo Coach (eps 10)

Je Seung-hyun

Private Tutor (eps 10)

Oh Jin-ha

Kindergarten Teacher (eps 10)

Jeon Sung-ah

Jung Yeon-do's Mom (eps 4)

Kim Jin-ok

Tteokbokki Restaurant Owner (eps 6)

Choi Yeon-hwa

Reporter Kang Sun-yoo (eps 10)