It sounds as if you're thinking of something specific.

[Rukia gazes at him curiously, holding one knee loosely to her chest. She knows a little about 'doing the right thing' instead of 'doing what's lawful' herself.]

What did you do that makes your hands so dirty as you claim them to be?

[She's not sure if he'll answer her or not, but she isn't afraid to ask him about it. How else will she know? She's sworn off snooping through people's files without their permission, though if he decides to give her the go-ahead, she'd probably take him up on it. Even so, she'd rather hear it from him instead.]

[As for expectations, she just smiles with a mild shrug.]

I'd be satisfied with friendship.

[Hopefully that's not too high an expectation for him.]