Kettlewell

Kettlewell is the name if the town and the house that they live in. It is the main location of Nerf: The Young Age and a minor part in The Evil King.

Nerf: The Young Age
It is where the whole plot/story occurs.

Nerf: The Evil King
Nicky dives into one of the sofas of the house. Esme also sits on a stair of the house.