Nina is what Lavi considers a motherly type figure! Honestly she's like what he wishes his mother was like, seeing as he wasn't raised by her and has no memories of the woman. Really he just wants her to pat him on the head sometimes and call him a good boy or that he did a good job.

But, realistically, he knows nothing of the like will happen. And it sort of makes him sad and deadcat all over the place in his head. Lavi's fine with it though, a lot of the nurturing women in his life have rarely done it so he doesn't expect it and doesn't hold it against her.

As a person he'd like to get to know her better, she reminds him a lot like Lenalee. Which is a good thing, he'll end up trying to protect her once he gets a handle on his powers.