Joo Seo-yeon (32 episodes, 2019-2020)
Lee Kang-woo (32 episodes, 2019-2020)
Kim Mi-kyeong (32 episodes, 2019-2020)
Lee Min-hyeok (32 episodes, 2019-2020)
Park Hyeon-soo (32 episodes, 2019-2020)
Han Jung Ho (32 episodes, 2019-2020)
Joo Seo Joon's trainee (32 episodes, 2019-2020)
Joo won-suk (20 episodes, 2019)
Baek Jang-mi (12 episodes, 2020)
Joo Seo-yeon's father (5 episodes, 2019-2020)
Hyung Won (2 episodes, 2019)
High School Girl (1 episode, 2019)
Lee Kang-hee (unknown episodes)
Joo Won-jae (unknown episodes)
Joo Seo-joon (unknown episodes)
Lee Joo-hee (unknown episodes)
(unknown episodes)