...That is a good question, isn't it.

Well, if this isn't Sion's house, and this isn't his own house, and there are unfamiliar creatures that live here, the logical assumption is of course that it is the creatures' house, right?

So he turns to the pink thing. "Is it all right for us to be here?"

"Clef." Nod nod nod.

He turns back to Sion. "This one says yes."

(The flawless logic of a four year old.)