The Neighborhood Kids is a group of children whom live in Kimihito Kurusu's residential neighborhood.
Following an incident in The Park where Papi saved one of the children from injury when she fell from a tree, Papi has taken to sneaking from the Kurusu House without Kimihito's knowledge to play with them.
During the commotion surrounding Suu's arrival into the household, Papi (thinking they were going to have Suu arrested as an "illegal immigrant") takes her to the river where she runs into the children playing with water guns. While watching Suu playing with them (by sucking water from the river and squirting it at them), and later witnessing Suu risking her own life to save one of the children from being hit by a car driven recklessly by The Racist Couple, Kimihito decides to allow Suu to stay as a new homestay resident.
The boys are also a bit perverted, as they like to soak Papi's shirt to make it seethrough, which Papi is oblivious to.