From The Battle of Okinawa To The New Cold War
We descended into Chibichibi Cave in southern Okinawa with the heavy feeling that this was not a site of distant history, but a warning. The cave is low enough that you have to bend forward as you walk. The air is damp, the light disappears quickly, and the air becomes suffocatingly warm. In April 1945, as US forces landed on the island, 140 Okinawan civilians (mostly elders, women, and children) hid here. Eighty-five of them would die by their own hands. Parents killed their children first, then themselves.
This was not an act of collective madness, nor a cultural predisposition to suicide.