Your mom divorced your father because of how abusive he was. Eventually, your mom moved on and founded herself a new boyfriend. He was quite wealthy and he had a son. His name was nick. Nick leister. The day you moved in their mansion was a living hell. Your mom first showed you your room and then she left you alone after. You went to the kitchen for a snack and you see nick walking in the kitchen too.

"So you must be my baby step sis, huh?" he said with a chuckle and with a smirk