Two months have passed since the kingdom and the empire went to war, and the empire continues to advance. As Layla tries to support the despondent Yuki, she thinks back on the tragedy that started it all.
To break through a stalemate a stone's throw from the capital, the Buerger Squad embarks on a night mission. But when Lily runs into unexpected trouble, she ends up relaying her past to Commander Owens.
Nothing stops the advance of the Grandiga empire, despite the valor of the troops of the Sun kingdom. While most of the residents are evacuated to a safe place, Princess Yuki wonders if it would be wiser to capitulate.
With the Kingdom hanging on by a thread, Grand Master Harold ramps up production on the new chrars. But Yuki and Layla pursue a different path based on the data sent by Izana.
The Empire surges onward, but life is grim for soldiers on the front lines. As she survives through tough situations with her teammates and commander, Stella's smile begins to change.
Winter has arrived. Yuki has lost many of those important to her, but she continues to press onward. As the war reaches its final stages, Yuki defiantly claims she will retake Hariant...
As the final battle rages on, Yuki and Stella arrive on distant foreign soil. Yuki has made up her mind to end the war, but Stella stands in her way. What future will these girls bring to their world?