Jajangjajang

Seo-Hwa lands a job at a top mattress company whose CEO, Cheol-Su Gam, is a sleep demon who hasn't slept in 600 years. He believes she is his destined human partner, the only one capable of helping him sleep and return to the demon world. Despite their professional relationship, a growing attraction emerges. However, Seo-Hwa's own sleep issues may interfere with their connection and his plans to return.