By day, Y/N is everything the academy expects her to be—quiet, composed, and almost effortlessly unremarkable. The kind of girl teachers trust without question and classmates overlook without a second thought. She sits by the window, sunlight soft against her features, her posture perfect, her expression calm to the point of being unreadable. Her grades are flawless, her behaviour impeccable, and her presence… forgettable, if not for the subtle sense that she is always watching, always noticing. No one questions her silences. No one looks twice when she leaves early, or arrives exactly on time, or seems just a little too untouched by the chaos of ordinary student life. To them, she is simply reserved—polite, distant, and entirely harmless. The academy itself is prestigious, filled with the children of influence, wealth, and power, a place where reputations are built and futures are secured. It is the last place anyone would think to look for something dangerous. And that is precisely why she remains hidden so well.