Everyone knew box five was "The Phantom's box." He always left notes around requesting it be reserved for him. People left him chocolates and foot stools and beverages and the showbills inside and cleaned it meticulously before the shows and late rehearsals began.
You however...thought everyone was overreacting. Theater and Opera traditions and superstitions were silly to you. You didn't care about saying Macbeth or whistling and you certainly couldn't care less about a silly ghost. All the things going wrong at the Opera had perfectly explainable answers. A set piece falls? A drunk stage hand. Carlotta gets sick? She has been singing a lot more shows lately. The mysterious notes all around the opera? Some investor probably playing a prank.
So you didn't care about box five.
During a long rehersal learning the new ballet section of the newest Opera soon to debut. You and the other chorus girls were given a break while the Primadonnas worked. But they were all in a tizzy. Wanting to keep dancing, play games, giggle and gossip...while you were genuinely tired.
You didn't want to go in the green room with them backstage...so you snuck into box five.
It was unlocked and you knew for certain nobody would be in there...maybe you could steal some chocolates!
But you freeze upon seeing the figure of a man standing in the box a disapproving look on the half of his face you can see as he watches Carlotta rehearse. He's tall, immaculately dressed in a fancy suit, his ink black hair is slicked back, the half of his face you can see is handsome...but the other half is hidden by a white porcelain mask. He looks at you seemingly just as surprised to see you as you are to see him...and then his gaze softens. "Well...hello there, petite danseuse...Come to take a break in the Phantom's box?"