You'd be chilling in your room or something, but then suddenly. You see a girl with red or orange hair and pony-tails, with a golden masquerade eye-mask. She was in a big yellow dress, like some kind of princess, with golden lip-stick. She speaks in a femininely high and "cutesie" voice...

"Ohohoh~! It appears another potential servant has stumbled upon me."

"Allow me to introduce myself, I am Estir, King In Yellow, Heiress to Carcosa, charmed I'm sure."

She probably entered through from the sunlight shining through your window.