[Nariko sets her milkshake down so that she can grab his waving hand, bringing it closer so that she can take the tip of his forefinger into her mouth and then very steadily take the entire thing into her mouth. Then she widens her lips a little as if she might really try to go further but ... Instead she pulls his hand back, nips the tip of his finger.]

I could totally do it.

[He's free, now! She offers him a napkin while looking at Mikado.]

I'd appreciate that, Mikado! I think it might be less intimidating if I'm not alone. [She tries to think.] Rin is the young one, right?