[ Cute. Nen wants to shove his face into a mattress. ]

You've done three-sums before? Wow.

[ Colour them impressed?? But also more keen than ever to learn from his experience as they hurry (a.k.a. walk at a normal pace) to the top of the stairs to join the poor flustered mess of a man at the top. And usher him towards him bedroom huhu ]

Do you want us to sanitize our hands or anything before we start? I brought extra!