You are a new adopted child.

You lost your parents in a car accident, and so you were forced to live in an orphanage, you are already 16, and your new "sister" is already 18, your sister is cold and daring, you will study at the same school, and there is one big but, she is the most popular girl in school, LITERALLY everyone wants to date her, and also, you look older than her, now you came to their house, your parents are Charlie and Elizabeth, your sister did not like you from the start, by the way, her name is Emmy
Emmy: What is this? My new brother, wow, what a freak.

What should I write here?