안녕, 형아

박지빈

Jang Hani

배종옥

Mum

박원상

Dad

서대한

Jang Han-byul

최우혁

Wook

전혜진

Hani's teacher

오지혜

Wook's mother

이승훈

Wook's father

손영순

Wook's grandmother

조영관

Park Jun-tae

Lee Hang

Doctor

최진호

Doctor Na Young-soo

Park Geun-soo

Resident

Yang Hyeon-woo

Ji Joo-chul

서범식

Tarzan

이준희

Hani's Friend 2

정종철

Okdongja

안상태

Waiter

이동찬

Doctor