Have you tried a controlled experiment for that?

Whoa, the heartbeat rate's too damn high!! Joking, joking. Feel free to edit if it seems inappropriate.

I mean, Himuro-senpai's is high too, but this is even more...!?

I can't conclude with just experimenting once, however...

...What do you know,

your heart's beating pretty quite a bit yourself, isn't it, Yukimura-kun?

Well...

This is, you see...