Si-wan Yim

Jang Geu-rae

임시완

Lee Sung-min

Oh Sang-shik

이성민

강소라

Ahn Young-yi

Ha-neul Kang

Jang Baek-gi

강하늘

Byeon Yo-han

Han Seok-yool

변요한

김대명

Kim Dong-sik

Park Hae-joon

Chun Kwan-woong

박해준

Lee Kyung-young

Choi Young-hoo

이경영

Shin Eun-jung

Sun Ji-young

태인호

Sung Joon-sik

Ryu Tae-ho

Go Dong-ho

류태호

Jeon Seok-ho

Ha Sung-joon

전석호

Jung Hee-tae

Jung Hee-seok

정희태

오민석

Kang Hae-joon

Oh Jung-se

Husband

오정세

Kim Won-hae

Park Young-ho

김원해

Lee Jun-hyeok

Employee

이준혁

김기방

Employee

김호창

Employee

최재웅

Assistant manager Cho

성병숙

Jung Sook-hee

Yoon Jong-hoon

Lee Sang-hyun

윤종훈

Choi Ha-ho

Jang Geu-rae (teen)

송영재

Baduk team leader

Son Jong-hak

Ma Bok-ryeol

손종학

Jang Hyuk-jin

Moon Sang-pil

장혁진

민복기

Kim Sang-hyeob

Yoo Jae-myung

Factory worker

유재명

정의갑

Moon Chung-gi

정석용

Hwang

Lee Seung-joon

Shin Woo-hyun

이승준

송영규

Director of Planning

송재룡

Seo Jin-sang

Hee-won Kim

Park Jong-shik

김희원

김가영

Jang Mi-ra

Kim Gyeong-ryong

Lee Jin-tae

김경룡

오윤홍

Oh Sang-shik's wife

이시원

Ha Jung-yeon

조현식

Kim Seok-ho

김예준

Jang Geu-rae (young)

남명렬

Baduk master

Kim Jong-soo

Kim Bu-ryeon

김종수

Jo Hun-hyeon

Self

Moo Jin-sung

Jang Gi-seok

무진성

Maeng Bong-hak

Han Seok-yool's father

맹봉학

이고은

Park So-mi

Shin Jae-hoon

Yoo Hyung-gi

이달형

Byun Hyeong-cheol

Choi Gwi-hwa

Park Yong-goo

최귀화

김정학

Lee Seok-joong

Cha Soon-bae

Choi

차순배

Hwang Seok-jeong

Kim Sun-ju

황석정

최수린

Michelle Jang

배유람

Oh Sang-shik (young)

남경읍

President

한갑수

Kim Seok-woo

Park No-shik

Deputy manager Ham

박노식

서윤아

Lee Eun-ji

전진기

Ahn Young-yi's father

장준휘

Assistant manager Seok

정수영

Assistant manager Kang

Go Eun-yi

Lee Yeon-seo (Eps 19)