Nick Cheung Ka-Fai as Choi San-keung / Sum Cheuk-yan

Fala Chen as Fiona

Terrance Lau Chun-Him as Dr. Man

Rebecca Zhu as Donna

Ben Yuen Foo-Wah as Man's Father

Natalie Hsu as Yi

Julius Brian Siswojo as Chi

Deon Cheung Chung-Chi as Tony, Stock Broker

Peter Lai Bei-Dak as Wah

Yuen Yee-Man as Man's mother

Carl Ng Ka-Lung as John, Hospital General Manager

Geoffrey Wong Chi-Hung as Micheal Fu, Director of Hospital

German Cheung Man-Kit as Vincent's Bodyguard

Andy Lau as Vincent

Lauria Wu Gar-Ying as Chi's wife

Wong Chi-On as Gender Neutral Customer

Cheung Lap-Fung as Big Baby Doll

Au Hin-Wai as Hospital Manager