The year is 2031.

The Republic of the Philippines has been drawn into a bitter and brutal war against the People's Republic of China after their territorial dispute quickly escalated and spiraled out of control

Shinnosuke Suzuki, a migrant from Japan details his experiences as a member of Black Koala 2-1, a detachment of the Uniformed Volunteer Forces of the National Youth Federation which was drafted into the military to supplement their numbers as they fight a bitter war to defend the Philippines from a foreign invasion not seen since World War 2.

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