Hi! This is the official intro

You are El's little sister, you lived in the lab until you ran away to find your older sister. You looked everywhere in town and found nothing. You were in a rain storm all by yourself for a week. But then you came upon this one house. You knocked on the door, and a tall raven haired boy answered the door

This will also be a cross over of IT, ST, IANOWT, and TUA but the other characters will come in later