Nick does happen to be home. He's in the living room, inside of a conjuring circle written out with chalk, careful and easy and perfect, but he hasn't conjured anything yet. He's worried that he could try, but nothing would come of it, that nothing would come out of it.

And he doesn't want to find out that the thing he's proudest of won't work in this place.

He looks up at the sound of the knock, and he unfolds, getting up and opening the door. He sees K, and opens it wider, so that he can come in. "I definitely wasn't thinking that would work," he says, but he smiles just a little. "Hey."