This study analyzes the Vietnamese subtitles of the comedy film <6/45>, which was released in Vietnam in 2022 and set the highest box office record for a Korean film in Vietnam. The purpose of this research is to examine the specific aspects of Korean-Vietnamese translation through actual subtitle examples from the theatrical release and to identify the linguistic and cultural transformation strategies employed in the process. This aims to provide practical materials for Korean language education and the cultivation of translation talent within Vietnam. This study focuses on examining how subject omission phenomena are handled during translation and the strategies for transforming cultural and political elements. Subjects frequently omitted in the Korean source text were mostly explicitly restored, considering Vietnamese grammatical and pragmatic characteristics. However, in specific colloquial contexts—such as expressing intimacy between characters or the urgency of dialogue—the original omission structure was retained to enhance naturalness. Furthermore, the translator actively employed ‘domestication’ strategies, replacing unfamiliar Korean cultural elements or sensitive political expressions with contemporary slang, memes, and proverbs familiar to Vietnamese audiences. This study holds significance in that it empirically presents practical transformation strategies in Korean-Vietnamese translation, particularly localization methods reflecting the latest media environment, by analyzing subtitles from an actual box-office hit. The findings can serve as a useful foundational resource not only for the field of translation studies but also for practicing translators and Korean language learners, helping them cultivate the cultural literacy and practical insights essential in the translation process.