as Lim Ju-kyung
16 episodes
as Lee Su-ho
16 episodes
as Han Seo-jun
16 episodes
as Kang Soo-jin
16 episodes
as Lim Hee-kyung
16 episodes
as Lim Jae-pil
16 episodes
as Hong Hyun-suk
16 episodes
as Han Joon-woo
16 episodes
as Lim Ju-young
16 episodes
as Choi Soo-a
16 episodes
as Kim Cho-rong
16 episodes
as Young Im Hee-kyung
16 episodes
as Park Sae-mi
16 episodes
as Han Go-woon
16 episodes
as Yoo Tae-hoon
16 episodes
as Choi Man-shik
16 episodes
as Ahn Hyun-gyu
16 episodes
as Kim Si-hyun
16 episodes
as Ha Ji-young
16 episodes
as Lee Joo-hun
16 episodes
as Mr. Oh
16 episodes
as Se-mi's Friend
16 episodes
as Kim Ga-young
16 episodes
as Joo Hye-min
16 episodes
as Comic Store Owner
16 episodes
as Lee Ye-rim
16 episodes
as Disciplinary Teacher
16 episodes
as Vice-principal
16 episodes
as Selena Lee
16 episodes
as Yoo Gang-hyeon
16 episodes
as Classmate
16 episodes
as Woo-hyeon's Girlfriend
16 episodes
as Lim Hee Gyung [Young]
1 episode
as Lim Joo Young [Young]
1 episode
as [Neighborhood woman]
1 episode
as [Yongpa High student]
1 episode
as [Yongpa High student]
1 episode
as Wang Hyun Bin [Joo Gyung's crush]
1 episode
as [Neighborhood woman]
2 episodes
as Byeon Joon Hyeok [Yongpa High student]
4 episodes
as Jeong Se Yeon [Su Ho & Seo Jun's friend]
5 episodes
as Lim Joo Gyung [Young]
4 episodes
as Lee Sung Yong [Yongpa High student]
5 episodes
as Lee Su Ho [Young]
4 episodes
as
1 episode
as [Su Ho's housekeeper]
1 episode
as [Comic store customer]
1 episode
as [Convenience store friend #1]
1 episode
as [Convenience store friend #2]
1 episode
as [Convenience store friend #3]
1 episode
as Lee Mi Hyang [Seo Jun’s mother]
5 episodes
as [History teacher]
2 episodes
as Eun Dan Oh [Movie goer]
1 episode
as Baek Kyung [Movie goer]
1 episode
as [Math teacher]
3 episodes
as [Music teacher]
2 episodes
as Jin Hee Jung [Seobom High freshman student bully]
1 episode
as Jin Hee Jung [Seobom High freshman student
1 episode
as Doctor Kang [Soo Jin's father]
4 episodes
as [Soo Jin's mother]
4 episodes
as Ryu Hyung Jin [Baseball player]
1 episode
as [Sung Yong's father]
1 episode
as [Baseball game spectator]
1 episode
as [Swarovski saleswoman]
1 episode
as [Camp ground owner]
1 episode
as [Angry customer]
1 episode
as [Move Entertainment team leader]
2 episodes
as [Saebom High student bully]
4 episodes
as [Columbus Park]
2 episodes
as [Community center grandmother]
1 episode
as [Soo Jin's math tutor]
1 episode
as [Gangster]
1 episode
as [Bus driver]
1 episode
as [Move Entertainment employee]
1 episode
as Min Jae Joon [Plastic surgeon]
1 episode
as [Hee Kyung's acquaintance]
2 episodes
as [Joo Hun's assistant]
2 episodes
as [Wedding shop staff]
1 episode
as Oh Nam Joo [Man at Namsan Tower]
1 episode
as Dr. Han Chae Hoon [Emergency room doctor]
1 episode
as Chen [Move Entertainment celebrity]
2 episodes
as [Seo Jun's band member]
2 episodes
as [Doctor]
1 episode
as [Community center grandmother]
1 episode
as [Female student]
1 episode
as [Student]
1 episode
as [Reporter]
1 episode
as [Cinema viewer]
1 episode
as Ji Woo Hyeon
1 episode
as [English teacher]
1 episode
as [Kindergarten boy]
1 episode
as [Playground bully]
1 episode
as [Photographer]
2 episodes