At that day, at that time...
There was a man who embarked on a battleship alone and fought for the weak people of the Red Zone.
At that day, at that time...
There was a pair of 612 who pledged to live together at the everlasting summer sea.

And now, Nayuta heads toward the Battleship yet again, facing her past and very being.
And now, the artificial goddess Eliza resolves herself to stand alongside War for the rest of her life.

This is an adventure tale that connects the main star with the following ones.
This is a story about the new generation that continues to advance further and further.

[Translated from the original site]