On April 19th, 1973, a race of extra-terrestrial lifeforms launched a landing unit from the moon, which touched down on Earth, in central Asia. Ever since, mankind has been engaged in a losing war against this alien species, known as the BETA, as they have gradually expanded outwards across the globe. After 20 years of non-stop fighting, the war has reached the shores of Japan...
and the battlefield expanded 
into eastern Japan.
.وامتدّت أرض المعركة نحو اليابان الشرقية
Das Schlachtfeld
verlagerte sich nach Ostjapan.
El campo de batalla se había
extendido al este de Japón.
El campo de batalla se había
extendido al este de Japón.
L’offensive continua
sa progression vers l’est.
E così, lo scontro dilagò nel Giappone orientale.
E o campo de batalha se expandiu
para o leste do Japão.
Бои перешли в восточную часть Японии.