After working as a lecturer on mathematics, Noh Yeonguk took a role as an advisor for mystery-related TV programs such as MBC Infinite Challenge (the episode of Mudo Detective Agency), tvN Problematic Man, and JTBC Crime Scene. Now, Noh is the CEO of the RS Project, a company specialized in creating a well-made theme for room-escape cafes and produces a variety of mystery content. Noh has also run the RS mystery club to help many people realize the charm of mysteries and solve problems together. He is a big mystery lover. His hobby was to solve mysterious problems while indulging himself in the charm of mysteries hidden everywhere in daily life, and that hobby later became his job.