生日快樂

고천락

Siu Nam

유약영

Siu Mai

오요한

Mai's Father

陳小春

Cheng

임현제

Himself

吳嘉龍

Cheng

周俊偉

Danny

Wei Wei

Mai's Grandmother

李勤勤

Nam's Sister

郭羨妮

Yan

陳美詩

Teresa

曾寶儀

Lam Wai

譚俊彥

임설

Orderly

周文慧

7-Eleven Store Clerk

羅天池