"Reverse Mermaid Saba" is an illustration series, which tells the story of a unique character named Saba. She is a reverse mermaid who lives in a city where all living things, except for her, are Christmas trees. Feeling excluded and alone, her only friend is a rubber ducky she received as a gift when she was a child. However, as the story progresses, she discovers that the city's inhabitants are not what they seem, and that under their Christmas tree costumes, they are all just like her - fishes. This realization leads to a heartwarming conclusion, demonstrating the importance of self-acceptance.