In a modern high school in Busan, Y/N is known for being quiet, well-behaved, and almost too put-together. Teachers like her, classmates don’t have much to say about her, and she rarely draws attention to herself. On the surface, her life seems stable—but behind closed doors, everything feels like it’s falling apart. Her parents argue constantly, their fights sharp and relentless, turning her home into a place she dreads returning to. The tension follows her everywhere, leaving her emotionally drained and desperate for some kind of stability.