Lee Sang-yeob

as Kim Tae-young

12 episodes

Kim So-hye

as Lee Kwon-sook

12 episodes

Kim Jin-woo

as Han Jae-min

12 episodes

Park Ji-hwan

as Kim Oh-bok

12 episodes

Kim Hyeong-mook

as Lee Chul-yong

12 episodes

Yoon In-Jo

as Lee Young-ae

12 episodes

Ha Seung-lee

as Jung Soo-yeon

12 episodes

Chae Won-been

as Han Ah-reum

12 episodes

Kim Sang-woo

as Go Seon-jae

12 episodes

Do Eun-ha

as Jo Ah-ra

12 episodes

Lim Young-joo

as Park Hye-jin

12 episodes

Kim Hee-chan

as Choi Ho-jung

12 episodes

Song Ye-bin

as Ms. Eun-sol

12 episodes

Lee Song-yi

as Small Teacher

12 episodes

Choi Jae-woong

as Kim Hee-won

12 episodes

Seong No-jin

as Trainer Song

12 episodes

Kim Seon-gi

as Big Teacher

12 episodes

Kim Sang-bo

as Park Kyung-soo

12 episodes

Nam Tae-woo

as Yang Man-hee

12 episodes

Min Kyeong-ok

as Moon Jung-hee

12 episodes