[He digs around in his jacket until he finds the disc. Normally he would leave something like this at home, but there's a new roommate in the apartment, and he's not sure if trusts her yet.]
Well, there's a whole lot of stuff that isn't my sister, but I don't mind you seeing it.
[She doesn't show up until the middle of the big battle scene, the only one of the core group shorter and younger than Nico. She looks nothing like him. Nico points her out.]