[At the very least, Kaneki needn't fear a lapse into French.]

That's the spirit!!

[Given proper permission, the ex-robot reaches for Kaneki's hand, gently taking it in his own. He's a nice guy, he'll take it slow from now on, kiddo.]

May I have your name, darling? Mine is Mettaton, and I assure you wholeheartedly that this will be the best dance you've ever taken part in~

[So ego. Very full of self. Wow.]