- Kim Yoo-jung
- Â Jung Saet Byul 16 episodes, 2020
- Ji Chang-wook
- Â Choi Dae Hyun 16 episodes, 2020
- Han Sun-hwa
- Â Yoo Yeon Joo 16 episodes, 2020
- Kim Sun-young
- Â Kong Boon Hee 16 episodes, 2020
- Seo Ye-hwa
- Â Hwang Geum Bi 16 episodes, 2020
- Eum Moon-suk
- Â Han Dal Sik 16 episodes, 2020
- Lee Byung-joon
- Â Choi Yong Pil 15 episodes, 2020
- Ahn Sol-bin
- Â Jung Eun-byul 14 episodes, 2020
- Heo Jae-ho
- Â Department Head Bae 14 episodes, 2020
- Do Sang-woo
- Â Jo Seung Joon 13 episodes, 2020
- Yoon Soo
- Â Cha Eun Jo 12 episodes, 2020
- Kyeon Mi Ri
- Â Kim Hye Ja (Yeon Joo's mother) 10 episodes, 2020
- Kim Min-kyu
- Â Kang Ji Wook 9 episodes, 2020
- Woo Hyeon
- Â Kwon Eui Chu 8 episodes, 2020
- Kim Ji-Hyeon
- Â Choi Da Soon (Dae Hyun's sister) 7 episodes, 2020
- Bae Gi-beom
- Â Ko Kwang Tae 6 episodes, 2020
- Lee Yoon-hee
- Â Cha Ki Bok 6 episodes, 2020
- Go Gyu-pil
- Â Oh Yo Han 2 episodes, 2020
- Ryu Seung-su
- Â Jung Chul-min (Saet-byul's father) 2 episodes, 2020
- Ian D. Spark
- Â Edward 2 episodes, 2020
- Park Jin-joo
- Â Bully group leader 1 episode, 2020
- Lee Jun-young
- Â Underage customer 1 episode, 2020
- Jung Eun-ji
- Â Jung Eun 1 episode, 2020
- Jeong Jun-ho
- Â Jung Joon Ho 1 episode, 2020
- Ahn Chang-hwan
- Â Part-time job applicant 1 episode, 2020
- Lee Yoo-bi
- Â Customer with dog 1 episode, 2020
- Kim Hyung-mook
- Â Da Soon's husband 1 episode, 2020
- Park Chul-min
- Â Fortune teller 1 episode, 2020
- Yoon Seo-hyun
- Â Kingdom Delivery boss 1 episode, 2020
- Kim Min-kyu
- Â The Show's MC 1 episode, 2020
- Song Hoon
- Â Movie director 1 episode, 2020
- Lee Ju Yeon
- Â Juyeon 1 episode, 2020
- Tak Jae-hoon
- Â Dal Sik's co-worker 1 episode, 2020
- Si-ye Shin
- Â Convenience store high school student 1 episode, 2020
- Gam So-hyun
- Â Jung Saet-byul (young) 1 episode, 2020
- Kil Yong-woo
- Â Yoo Myung Ki (Yeon Joo's father) 1 episode, 2020
- Myung Seok-Geun
- Â Alumnus at dinner 1 episode, 2020
- Kim Min-ju
- Â Park Kyeong-hee 1 episode, 2020
- Ha Ju-hee
- Â Oh Hyun Ji unknown episodes
- Ji Chan
- Â Kang Sung Tae unknown episodes
- Choi Yoon-Seul
- Â So Jung Hwa unknown episodes
