Overview
Castaway on the Moon (; lit. "Kim's drifting experience": 표류: drifting; hanja: 金氏漂流記) is a 2009 South Korean romantic comedy film written and directed by Lee Hae-jun. It is a love story between a suicidal man turned castaway on Bamseom in the Han River and a Hikikomori woman who is addicted to Cyworld.
Production
Title selection
Actor Jung Jae-young suggested the director, Lee Hae-Jun, to change the name of the film to "the drifting experience of the Jungs (정씨표류기)" to reference the fact that the actor and actress playing the lead roles are part of the Jung family, but the director insisted on keeping the name since he deliberately chose the family name Kim to suggest the universal nature of the characters.
Plot development
The two Kims in the film communicate with English since the director wanted to reflect that they are different from the mainstream society that they are part of which use Korean and the isolates would have their own symbols rather than language.
From Wikipedia (CC BY-SA 4.0).