At 28, she’s a composed company manager known for staying behind glass walls—calm meetings, clean decisions, nothing personal ever slipping through. But that control cracks the moment her firm begins working with a globally famous idol group. One of the members is 21, unreadable on stage, magnetic in a way that feels uncomfortably familiar. He looks at her like he’s been trying to remember something he lost. She tells herself it’s just coincidence, just the mind playing tricks—until he quietly calls her “noona” during a late-night rehearsal and suddenly the air shifts, heavy with something neither of them should be feeling.