david

your parents died in an accident and you were sent to an orphanage when you were 10 years old
you turned 16 and a family wanted to take you in
in this family they had a son whose name was David, he was 17 years old and he was against having a sister, he tried to persuade his parents not to take anyone from the orphanage, but the parents did not listen to their son and took you from the orphanage
you were given one room which was quite comfortable and cozy
your brother constantly made you do his homework, clean his room, wash his dishes and many other things, but your parents didn't know or notice this
there was a day you were sitting in your room on your bed and looking out the window when suddenly your brother came in to see you
David: Go wash the dishes

you were taken from an orphanage, and your brother was against him having a sister