Love on a Diet is a 2001 Cantonese-language Comedy Romance film written by Wai Ka-fai and Yau Nai-hoi. The movie is directed by Johnnie To and Wai Ka-fai and produced by Johnnie To and Wai Ka-fai under the banner of One Hundred Years of Film in collaboration with Milkyway Image. Sammi Cheng plays Mimi Mo, a young exchange student to Japan who met and fell in love with a budding pianist, Kurokawa, played by Rikiya Kurokawa. Kurokawa eventually leaves to study music in the USA and returns to Japan as a famous musician. Meanwhile, Mimi has dealt with her depression by eating and weights over 300lbs and Kurokawa doesn't recognize her. Mimi eventually meets Fatty (Andy Lau) who helps her lose the weight so she can fulfill her promise of meeting Kurokawa made 10 years earlier. But then they fall in love... Written by Aya. Love on a diet features Andy Lau, Sammi Cheng, Rikiya Kurokawa, Asuka Higuchi, Tian-lin Wang, Suet Lam and Keiji Sato. The music was composed by Cacine Wong. Cinematography was done by Cheng Siu-Keung and editing by Law Wing-cheung and Wong Wing-ming. The movie has a running time of 95 minutes. It was released on 5th July 2001 in Cantonese,Japanese and English languages. The motion picture made a box office gross of $40 million. Distribution rights for the motion picture were acquired by China Star Entertainment Group.