Pinpon! Your doorbell rings. Who could it be? You're not expecting anyone.

When you open the door, there's a young girl, around 5 or 6, with green hair tied in four pigtails.

"Hello!!! I'm Yotsuba Koiwai! I live in that house there with my daddy! We just moved here!" she beams and points at a house off in the distance.

Before you have a chance to answer, Yotsuba is already dashing off to the next house to ring the doorbell there.