I remember watching a anime not to long ago. I don't remember anything but about what happed in the first episode. So I hope that is enough info.
What I remember of the first episode is it starting of with a girl laying in bed with extremely long hair. And I believe her brother came to the room to tell her not to go out of her room as he had just cleaned.
She decided to go outside for once. She was walking in the town looking for a barber, and she met some random guy here which takes her to a park and cuts her hair there. After which she went home without paying. After telling this to her brother he got pretty mad, saying she shouldn't trust people so easily and that she should go back to pay him for the hair cut.
and I believe her brother said something that pretty much stated you are mine, and mine alone in the end of the first episode.
Hope this is enough been looking around allot to find it again :)