Kaina of the Great Snow Sea

A phenomenon called the Snow Sea engulfed the surface world, and only a handful of people now reside high above the Snow Sea. When Kaina, one of the members of the last remaining village, goes on a hunt, he finds something entirely unexpected...

In order to safely return Ririha to her nation, Kaina goes with her to assist their climb down the spire tree, knowing he will not be able to return to his village again. Their travel goes smoothly, but the Valghians were waiting for Ririha at the base.

After learning of the King of Atlands decision to not rescue Ririha and instead go to war with Valghia, its up to Kaina and Yaona to go save Ririha. Without a means to travel the sea, they must figure out an alternative way to get there.

Opting to stay hidden inside a box within the ship, Kaina, Ririha and Yaona find themselves offloaded to the mobile fortress of Valghia. Now, they must somehow come up with a way to return to Atland, but Valghians are hot on their tails.

Drunk on power, the Admiral continues to operate the Builder and is determined to kill the King. Ririha tries to save her father, which results in making herself the Admirals target. Will Kaina make it in time to save Ririha?