A musical based on the webtoon 'Yumi's Cells' is currently being produced and staged in Seoul [1].

The project signals a shift in how digital intellectual property is monetized. While webtoons have traditionally transitioned into films and television series, this move into live theater demonstrates a broader expansion of the medium's cultural reach and commercial potential [1].

Written by artist Lee Dong-gun, the original webtoon began its serialization in 2015 [1]. Since its debut, the series has achieved significant global reach, accumulating 3.5 billion cumulative views [1]. This massive audience base provides a low-risk foundation for theatrical productions seeking established fanbases.

Director Yang Jung-woong said the production process involved several stages, including story development and showcases. He said the development took several years to ensure the production captured a specifically Korean musical quality [1].

The production features actor T-Party Young in the lead role of Yumi. Young said the story is structured for the stage through a format consisting of a first and second act [1].

Industry observers note that webtoons are no longer just digital comics but have become core source material for the performing arts. This trend allows creators to translate visual storytelling into multi-sensory experiences, combining music, choreography, and set design to bring digital characters to life [1].

Webtoons are becoming core source material for the performing arts.

The transition of 'Yumi's Cells' from a digital screen to a physical stage illustrates the 'transmedia' strategy now dominating the Korean entertainment industry. By leveraging high-traffic IP with billions of views, producers can mitigate the financial risks associated with new musical theater. This suggests that the boundary between digital content and traditional performing arts will continue to blur as webtoons become the primary engine for narrative development in Seoul's cultural sector.