WEBTOON Entertainment, a leader in digital storytelling, is revolutionizing narrative comprehension with its advanced AI system, WEBTOON Comprehension AI (WCAI), powered by LangGraph. Known for pioneering the vertical scroll web comic format, WEBTOON Entertainment operates major platforms like WEBTOON and Wattpad, offering diverse content in genres such as romance and thriller. The company adapts its original intellectual properties into films and TV series, enhancing its global reach. WCAI automates the understanding of complex narratives without training on creators' works, using specialized workflows for character identification, speaker identification, narrative understanding, and specific business insights, significantly reducing manual effort and boosting productivity. LangGraph's architecture provides controllable and production-ready deployment, allowing WEBTOON to handle vast amounts of series data efficiently. This integration has automated content comprehension tasks, enabling teams to focus on creative and strategic initiatives, and continues to evolve with new features to further enhance narrative understanding and creativity across the platforms.