Sure is! Solo Leveling is a well-known manhwa that has captured the attention of many readers. It features exciting action and interesting character development.
One great Changmin Lee Yeon Hee fanfic is 'A Serendipitous Encounter'. It beautifully weaves a story of their characters meeting in a fictional world filled with magic and mystery. The author does an excellent job of portraying their personalities and the chemistry between them.