A Good Day To Be A Dog

Lee Hyun-woo

Lee Bo-gyeom

윤현수

Choi Yul

Ryu Abel

Han Yu-na

조진세

Song Woo-taek

Lee Seo-el

Yoon Chae-a

정영주

Shin Mi-seon

Kim Hong-pyo

Han Pan-dong

Jo Ah-young

Song Da-eun

Kang Soo-bin

Kwon Ri-ae

Kim Min-ji

Chu So-yeon

Shin Jun-hang

Jo Jun-seo

Yoo Seung-mok

Vice Principal

Kim Min-seok

Kang Eun-hwan

Kim Hae-jun

Uncle Dong-chul

이승준

Oh Sang-soo

송영아

Cheon Song-yi

Park Gyu-young

Han Hae-na

Cha Eun-woo

Jin Seo-won

Kim Yi-kyeong

Min Ji-a

Park Hae-in

Seo Yoon-ji

Lee Jong-wook

Bong Min-sik

임용순

Teacher

이화선

Teacher

Baek Hyo-won

Student

Kim Esther

Student

Kwon Hyeong-seok

Student

Jeong Ho-gyoon

Student

Sin Ha-jun

Teacher

Kim Yoon-soo

Student

심완준

PE Teacher

Kim Ha-eon

Jin Seo-won (Young)

Ko Kyoung-hee

Teacher

Ahn Jin-hee

Teacher

Kong Yi-yeon

Student

김원훈

Youtuber "Tough Guy"

임현주

Doo-na

Hwang Ye-won

Han Hae-na (Young)

김태연

Han Yu-na (Young)

Kim Te-yi

Song Woo-taek (Young)

Kang Yoon

Jun-woo

Jeong Bin

Hae-na's Friend

Son Jung-hoon

Student

Heo Tae-an

Student

Sung Yoo-na

Student

Jung Da-you

Student

Eun Yoo

Student

김수로

Taxi Driver

한현준

Do Jae-min

Hyeon Jin

Do Jae-min's Mother

Moon Min-chul

Seo Chang-soo

Lee Seob-geon

Min Gyeong-seok

Jung Ja-Young

Police Officer

신희철

Lingerie Buyer Couple Man

이혜은

Lingerie Buyer Couple Woman

정유리

Shop Clerk

Park Deu-ni-saem

Teacher

Kim Chan-mi

Teacher

Kim Yong-oh

Teacher

Kang Hyun-mo

Teacher

Jang Yong-bok

Wedding Officiant

Gim Dong-in

Newlywed Parent

Lee Jae-yi

Han Jae-hee