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| Jeon Do-Yeon | Jung Kyoung-Ho |
| Nam Haeng-Seon | Choi Chi-Yeol |
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| Roh Yoon-Seo | Oh Eui-Sik | Lee Bong-Ryun |
| Nam Hae-E | Nam Jae-Woo | Kim Young-Joo |
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| Shin Jae-Ha | Lee Do-Hye |
| Ji Dong-Hee | student |
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| Jang Young-Nam | Lee Chae-Min | Kim Tae-Jung | Kim Joon-Won | Kim Sun-Young |
| Jang Seo-Jin | Lee Sun-Jae | Lee Hee-Jae | Jang Seo-Jin's husband (ep.1) | Jo Su-Hui |
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| Kang Na-Eon | Hwang Bo-Ra | Yoo Da-In | Lee Min-Jae |
| Bang Su-A | Lee Mi-Ok | Jang Dan-Ji | Seo Gun-Hoo |
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| Heo Jung-Do | Ji Il-Joo | Lee Ji-Hae | Yoon Seok-Hyun | Kim Kwon |
| Kang Joon-Sang | Jin Yi-Sang | Ms. Jung | Song Jun-Ho (ep.1) | instructor (ep.1) |
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| Kim Da-Hwin | Kim Si-Young |
| Jeon Jong-Ryeol | teacher (ep.1) |
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| Lee Kyung-Wook | Gu Seo-Jun |
| CM director (ep.1) | building security guard (ep.1) |
