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Seol In-ah

Choi Se-kyeong

Seol In-ah

On Eun-yoo

Ryeoun

Eun-gyeol

Ryeoun

Ha Eun Gyeol

Choi Hyun-wook

I-chan

Choi Won-Young

Ha Eun-Gyeol's father

Koo Jun-hoe

Koo Jong-Hyeong

Shin Eun-soo

Yoon Cheong-ah

Kim Joo-Ryung

Im Ji-Mi

Bong Jae-hyun

Ha Eun-Ho

Ko Du-shim

Go Yang-Hee

Woo Jung-won

Yoon Sang-A (adult)

Lee Seok-hyeong

Jung Bal-San

Lee Soo-min

Yoon Sang-A

Kim Ye-Ji

Lee Mi-Ra

Seo Yeong-hie

Ha Eun-Gyeol's mother

Kim Mi-hwa

Yeom Byung-Ho's mom

Kim Dong-gyun

Math teacher