Mouse

이승기

Jung Ba-reum

이희준

Go Moo-chi

Park Ju-hyun

Oh Bong-yi

권화운

Sung Yo-han

Gyeong Su-jin

Choi Hong-ju

Woo Ji-hyun

Koo Dong-koo

조재윤

Daniel Lee

김영재

Go Moo-won

황세온

Kim Da-seul

박소이

Young Choi Hong-joo

이언정

Pregnant Lady

서동현

Teenage Go Moo-chi

Jo Yeon-ho

Young Go Moo-won

서정연

Go Moo-chi's Mother

Jeong Kang-hee

Go Moo-chi's Dad

Kim Yeong-ok

Oh Bong-yi's Grandmother

Joo Ye-rim

Young Oh Bong-yi

안재욱

Han Seo-jun