Ruri's Island (2005)

Ruri, having been abandoned by her mother to a foster care facility, lives a life of reckless abandonment. When Nakama Yuzo, a kind man but for a trigger-happy temper, runs into Ruri he realizes that perhaps she's the child he's been looking for. Yuzo lives in Hatomijima, a small insland in Okinawa where the population is 49 and the average age group is 61. There are no children. The island has only one school - a primary school. If a child is not enrolled in the school, it will be closed. As a result, society will abandon the island and in a few years, it will cease to have any inhabitants. To save their island, the locals decide to bring in a foster child. Ruri is their candidate, and with her she brings the hope of the island's survival.

Is Ruri's Island on Netflix? Unfortunately this serie is not yet available on Netflix.