Franchises sharing a universe isn't a new idea, especially in comics. Many already associated the concept with movies, TV shows, and Western comic books. Now, other media also attempt to expand on their most renowned series. While that's partly in the hope of earning more money from familiarity, another is to give the fans what they like. This is also true in the world of webtoons and manhua. While many readers may not be aware, numerous equally renowned webtoons share the same universe as Lookism.
Source：https://www.cbr.com/what-webtoon-anime-lookism-share-same-universe/
