Love is a Book.

The film consists of two love stories, "First, Second, Third" and "Love is a Book". The former tells the story of two male lovers who start with a sexual relationship, develop feelings, and then openly share their emotions, leading to a deep connection. The latter revolves around two female lovers, reuniting after a long separation, experiencing a surge of past emotions and the inevitable clash with present realities. Love is a book, and while they are in different chapters of their emotional journeys, both stories share similar, ambiguous, and pure expressions of love.