[He doesn't think any of that stuff is particularly strange considering their lifestyle but is at least smart enough to realize that this wasn't the time get into an argument about it. He looks her in the eye, slow and steady.]

You're Nami, our navigator. You like mikan and money and manipulating that idiot love-cook into doing things for you. [Your village was taken over by Arlong and you steal without reservation. You have a sister with purple hair, a weapon that manipulates weather, and a dream as big as my own.

In short, nakama. Zoro's gaze turns suspicious.] ... what's this about?