Kaina lives in a small village, with elderly people who are worried about him, as there is no other village in the Vault of Heaven and they believe they are the last humans in the world.

In order to safely return Riliha 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 Riliha at the base.