Yi (which means "two" in Cantonese). Learning Center staff Carat Cheung as Mak Ka-ka (麥家嘉) A teacher at Ophelia's leaning center. Aware of the learning center's struggles she quits her job and steals the students to open her own learning center. After getting into problems with her new boss, she becomes unemployed and begs Judy Chu Lei San to give her another chance to work at their center. Having pity because she has to care for her little child, Judy agrees to rehire. Janice Shum as Teacher Si (施老師) Kenny Chan as Teacher Chan (陳老師) Kanice Lau as Teacher Lam (林老師) Ice Chow as Teacher Yeung (楊老師) Kimmi Tsui as Wing So Lai Ming as Sa (Sa姐) Real-estate staff Jerry Ku as Stone Sek Dong (石冬) Ku Tse-keung's best friend and work colleague. Sek Dong is the worst real-estate agent at his branch. Sek Dong depends on Tse-keung's completed sales contracts, which Tse-keung passes to his friend, to survive at work. Billy Cheung as Michael The boss of the real-estate firm Tse-keung works at. He is friendly and nice to Tse-keung until Tse-keung's real-estate license is suspended. Mandy Lam as Helen Tse-keung's work rival and enemy at the same real-estate firm. Tse-keung often mocks her because she has to leave work early or on time to care for her child. He also steals her accounts when she is not at the office. She takes over all of Tse-keung's accounts when his real-estate license is suspended. Bob Cheung as Real-estate employee (地產經紀) Tse-keung's immature work colleague. He is nicknamed Kwok Fu-sing (郭富城; Hong Kong singer Aaron Kwok's Chinese name) because of his resembles to the singer. Milkson Fong as Real-estate employee (地產經紀) Tse-keung's other immature work colleague. Physical Therapy center Henry Lo as Kwok Jo-hong (郭早康) King Lam as Si Hing (施興) Ceci So as Brenda Wong Fan-nuen (王芬暖) Kirby Lam as Lam Siu-ping (林少萍) Alan Tam Kwan-lun as Hung Wing-leung (洪永良) Joan Lee as To Kit-yee (杜潔兒) Extended cast Snow Suen as Bella Fung Yuet-na (馮月娜) Ku Tse-keung's ex-wife. Ku Tui-nam's mother. Pacino's newly wed wife. Due to getting married and honeymooning she has to leave her son with her ex-husband for an extended period of time. She and Tse-keung have a strained relation because he is unable to keep his promises to their son. Being used to Tse-keung's unreliable behavior she tests him and waits for him to fail