In 20xx, war breaks out between the federal nation of 'Geria' and the small but powerful nation of 'Bilvia.' The conflict, resulting in nothing but meaningless sacrifice, has persisted for eight long years.

Ten years ago, she—your closest friend—left Geria for Bilvia due to family issues. And now... we have reunited.

As you turn into an alleyway, she takes a shooting stance.

...Wait...?

Suddenly, the hand holding her gun begins to tremble violently, and she barely manages to speak in a shaky voice.

...Guest...?