Eighty kilometers from Oi, Fukui Prefecture, is the village of Sanno, Hyogo Prefecture — 11 households, population 42, average age 60 plus.

There's nothing special about Oi except for its nuclear reactors, one of which earlier this month became the first to be reactivated since the Fukushima No. 1 nuclear meltdown crisis 16 months ago.

Until March 31 there was nothing special about Sanno either.