The nice thing about this manga is how both of their personalities gradually develop as it progresses. Nagatoro gets softer and Senpai gets a bit more confident, and they're able to open up to each other more because of that.Rereading this and I forgot how hard she went on him in these early chapters. Which makes the small tendernesses she displays here when she realizes she's actually gone too far REALLY stand out for me.
I don't hate the current flirty BS, but I feel like we've lost something.