Edward Chen as Chang Jia-han

Tseng Jing-hua as Birdy Wang

Leon Dai Li-Jen as Adult Chang Jia-han

Wang Shih-Sian as Adult Birdy Wang

Fabio Grangeon as Father Oliver

Barry Qu as Horn

Stone Yang as Rocky

Lance Chiu as Phil

Mimi Shao as BanBan

Lin Hui-Min as Bullied Schoolboy

Lotus Wang as Jia-han's Mother

Cheng-Yang Wu as Jia-han's Brother

Lenny Li as Brother's Girlfriend

David Chiu as Chi Chia-wei

Chih-ju Lin as Old Lonely Man in Park

Soda Voyu as Dirty Head

Honduras as Instructor

Chen Yi-ruei as Angel

Lung Siu Wa as Birdy's Dad

Chin Tzu-yen as Choir Girl

Qu Youning as Chief Instructor

Ma Nien-Hsien as Adult Horn

Mountain Kao as Adult Phil

Waa Wei as Adult BanBan

Jean-François Blanchard as Alex