[His ears stay scarlet but keeping his eyes away from Akira makes it easier to pretend he's composed despite Akira's kissing his knuckles.]

...you're welcome. You've said before I'm difficult to impress, and you're not wrong, so-- [He curls his fingers into Akira's and flashes him a brief challenging grin-- even if he's visibly flustered anyway.] ...Congratulations on impressing me.

[Someone whistles from a short distance away and Akechi goes rigid, yanking his hand away and pivoting to stalk away from him, fluorescent all over again.]