What is the fine-grained topic of the following text: The film is broken into loosely connected chapters and episodes by Lee Sung-gang's ("My Beautiful Girl, Mari") eye-catching animation sequences, with the story line progressing logically enough so that those without Korean language skills (the DVD version was released without English subtitles) can follow without too much pain. Only return the topic.
Review of Lee Sung-gang's film presentation and storytelling style