[Okay, so he probably should have expected that the posturing wasn't going to work on Ren at this point, but he just goes on as if they both don't know that it didn't. Accepting the other outcome would be letting Ren win, as far as he's concerned.
The change of subject helps, because it means he can just transition to that and talk about something he actually can follow reliably. It does take him a moment after Ren says that to remember the exact time his pulse rate had sped up in particular, though, and Shun lets out a slight sigh as he puts two and two together...]
Of course. I should've guessed you'd start getting excited when it started hurting more. [...and gets five rather than four.]
no subject
The change of subject helps, because it means he can just transition to that and talk about something he actually can follow reliably. It does take him a moment after Ren says that to remember the exact time his pulse rate had sped up in particular, though, and Shun lets out a slight sigh as he puts two and two together...]
Of course. I should've guessed you'd start getting excited when it started hurting more. [...and gets five rather than four.]