The release of "The Art of KPop Demon Hunters" digital art book has confirmed significant lore from the Netflix film "KPop Demon Hunters." Fans are now aware of Rumi’s tragic backstory, where her mother was killed when Rumi was just a baby. The book suggests that Celine, a key figure in Rumi’s life and her mother’s confidant, may have accidentally caused her death. This revelation has led to intense speculation about the storyline of a potential sequel, which is set for release in 2029. The film already made records as Netflix’s most-watched movie at its launch, creating high expectations for future installments and story development surrounding Rumi and her mother's legacy.

The sequel is anticipated to explore various new themes, including more Korean cultural elements, global settings, and the origins of how the characters formed HUNTR/X. The voice actors have expressed interests in these areas, suggesting a broader storytelling perspective in the forthcoming film.

Released in 2023, "KPop Demon Hunters" combines vibrant animation with music, making it a unique blend of genres that resonates with audiences. The film follows the struggles and triumphs of Rumi and her band as they navigate a world filled with demons and personal loss, striking a chords with themes of resilience and friendship. Its success has sparked a strong fanbase eager for more content and deeper storytelling.