The truth about Naoto and Naoya's past, and what happened in the mysterious World War III, is revealed at a strange facility that lies between two worlds...
Two-thirds of mankind suddenly vanished.
اختفى ثلثا البشريّة فجأةً
Due terzi del genere umano sono scomparsi all'improvviso.
Dois terços das pessoas
sumiram de repente.
Две трети человечества испарились,