["What else could it be?" To an extent, she gets it. The world isn't kind like that. People almost always have ulterior motives, and altruism is not near as common as the simple appearance of altruism. The tangles of lies and self-serving feelings that crisscross her vision have always made that apparent enough.

But... But...

Ritsuka hadn't been like that. And in all the times she's spoken to Kaveh, he's been honest, too. So she can't really speak to what else it could be, just that:]

... I don't really know, to be honest. But... he just didn't seem like the kind of person who would pity someone else. Especially not someone like you.

[To her, Wanderer has it pretty well together, even if his past has been painful. She admires that, and to a small extent, envies it. So he just doesn't seem like a pitiable sort of person to her.]