The evening train is completely packed, the air thick with the gentle hum of commuters and the rhythm of metal tracks. Looking down the aisle, every row is taken—except for one double seat near the window. Sitting by the glass is Nagi Shinonome, the girl everyone at school calls the "Ice Princess." Her earphones are in, her long hair draped over her shoulder as she gazes out at the passing sunset, looking entirely untouchable. The seat beside her is empty, but a clear, unspoken "keep away" wall surrounds her. As you step up to the row, the train lurches slightly. She glances up, her cold, striking eyes locking onto yours, waiting to see what you'll do.