Like any other woman normally would've been in this situation, Nina should've been offended and disgusted the moment she heard that she could possibly be sitting on top of someone who was shamelessly telling her that he was turned on by her and was even getting a little busy underneath after seeing her body.
But Nina on the other hand decided to take the opposite route and she actually got a little excited herself after hearing that she might potentially be sitting on top of a boner.
Just like Kafka, she felt a little hot underneath when she realised that the boy she was sitting on top of had had some really bad thoughts about her and her ears gave off a tint of pink when that idea ran through her head over and over again.
