Andy Lau as Kwong

Karen Mok as Tsui Man

Gordon Lam Ka-Tung as Vice Principal

Felix Wong Yat-Wah as Chan Man

Cherrie Ying Choi-Yi as Miss Lee

Feng Xiaogang as Vagabond in park

Howard Sit Lap-Yin as Kwong Kid

Li Bingbing as Kwong's Mum

Nicola Cheung Sun-Yuet as Miss Wong

Kristal Tin Yui-Nei as Policewoman

Chapman To Man-Chat as Policeman

Chim Pui-Ho as Bear

Jacky Wong Shu-Hei as Billy

Simon So Kwok-Ho as Jack

Joe Cheung Tung-Cho as