[His first reaction upon hearing Fai's accidental broadcast is pure relief. His partner is cutting ties with that bastard, though it sounds like a conditional thing. What promise? Not that he really cares...

The second feeling is surprise. Fai... had liked Kotetsu in that way? He can't help feeling a little glad that his actions helped to drive Fai away, no matter how small that help might have been. Kotetsu is his partner, dammit.

...he won't dwell on that last part too much. Instead he bites back a sigh, glad she can't see him rubbing at his temple.]

Kotetsu isn't angry, Miata. I'm not certain what that promise is about [though he has a few guesses] but whatever it is, if Fai ever made it... Kotetsu would welcome him back. It's the sort of person he is.

I hope he doesn't, though. I am angry with Fai. [Also kind of terrified, but he won't say that.]