Invasion by Fire and Thunder

Holding the sea between your hands as droplets escape between your fingers.

At Aquamarine Port City, Tomoe works day in and day out to keep peace in its streets. As a member of the Beheader Corps, she strives to keep the peace even when this means that she constantly jumps into danger alone.

In a country where all of its states are at a 300 years cold war with each other, the Aquamarine state has lost all contact with other states. Only the dead whistles and drumming rivers can be heard at its borders...

And after 300 years, they're echoing, being accompanied by the drum of thousands of steps, crossing.

As Fire and Thunder are brought to Aquamarine Port City, the days where Tomoe felt at ease end. Her experience mocked, her confidence burnt, her pride reduced to ashes, to survive and protect the people she cares for she has to pay a price that she may be unable to:

To let the past go.

Edit: I don't know the image that I have put for a cover. Neither do I know who owns it, a search through Google doesn't leave it clear this fact either. If you happen to know who owns it or are the owner of the image, please tell me and I will credit you as I should. If you want it removed I will gladly do it too.