Which is a gesture that, although he isn't sure why, makes Sizhui blush and lower the hand again. Truly, he has no doubt.

There's another tease to be made here, something about the differing importance of knowing how to use a fire extinguisher aboard the train and learning there are four thousand rules that exist in Sizhui's homeworld, all of which are totally useless to Dennis.

Nevertheless, he shakes his head, twists around in his seat and reaches to gently pinch Dennis's forearm. “For good measure.” Because he can't help himself, obviously, but after withdrawing, he does slide from the seat back out into the aisle, politely bowing his head. “And if there ever comes a time where you need another distraction... perhaps we could go over all those aforementioned rules?” A beat, his lips curving into a grin. “Or maybe play some videogames in the game carriage instead.”