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| Lee Jong-Suk | Shin Hye-Sun |
| Kim Woo-Jin | Yun Sim-Deok |
 |
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 |
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| Kim Myung-Soo | Park Sun-Im | Kim Won-Hae | Hwang Young-Hee | Ko Bo-Gyeol |
| Kim Sung-Gyu | Jung Chum-Hyo | Yoon Suk-Ho | Sim-Deok's mother | Yoon Sung-Duk |
 |
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 |
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| Shin Jae-Ha | Lee Ji-Hoon | Jung Moon-Sung | Oh Eui-Sik | Lee Joon-Yi |
| Yoon Ki-Sung | Hong Nan-Pa | Jo Myung-Hee | Hong Hae-Sung | Kyosuke Tomoda |
 |
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 |
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| Han Eun-Seo | Lee Sang-Yeob | Jang Hyun-Sung | Lee Cheol-Min | Kim Gang-Hyun |
| Han Ki-Joo | Kim Hong-Ki | Lee Yong-Moon | government officer | Lee Seo-Koo |
 |
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| Jang Hyuk-Jin | Bae Hae-Sun |
| Dauchi | Professor Ueno |
