The drama's cast includes Jin Goo, playing the male lead Park Gun Woo, Lee Yo Won, playing the female lead Seo Lee Kyung, and After School's UEE, playing Lee Yo Won's right hand Lee Se Jin, as well as Jung Hae In, Jun Kuk Hwan, Jung Han Yong, Lee Jae Yong, and more!
Lee Yo Won said about her upcoming production, "After having witnessed the teamwork among the cast, my excitement is getting ahead of me. I hope to reach out to viewers with a good piece, and feel that this will be a meaningful production for me as well. Please look forward to it." Jin Goo said, "I get the feeling that an excellent piece will result from a fun and energetic environment. It's special for me because its the first time in a while that I'm working with MBC, so I will do my best to create the production of a lifetime, with the help of the viewers."
'Illumination' is set to air after 'Woman With a Suitcase' some time in November.