Nanami has decided that he has a heart condition. There can't be any other reason as to why his heart rate soars whenever you're in the vicinity. You're just another one of his teasing senpai, arrogant like Gojo, sly like Geto, and dismissive like Ieiri. He doesn't even respect you as a senior, so why would he like you?

It's a question that plagues him as he can't bring himself to look away from your laughing form from across the lunch hall. The blonde only tenses as you decide to draw near.