Huh. This explains her confusing mercurial mood swings between abrasiveness and deredere-ness so far. She's kinda like Asuka Langley Souryuu, in that she's afraid of letting people into her heart only to get hurt by them leaving/betraying her, so she pushes them away to avoid that.
Your family is not just rich, huh...That must be nice. To live your life with people surrounding you.You think so? There's not a lot of freedom in that kind of life though.Don't worry.So I was always alone in that house...Ahh...I will always be by your side.Because from here on,Security... employees...Me and my sister have only got each other.Yet my sister always goes out, playing around and never coming home...