Children of the Godlight

Boy and Sistah, companions on the quest, depart their floating island in the vast expanses of their ocean planet, adventuring high up into the sky to the fifth level of the cosmos, famous for its cloud cities. There they meet busybody little people and the tall listeners to prayer, both residents of the gossamer cities. Then on they go to the sixth level, in constant twilight, where they confront demigods and their own ambiguous size. And yet higher still to the seventh level...
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Boy and Sistah, companions on the quest, depart their floating island in the vast expanses of their ocean planet, adventuring high up into the sky to the fifth level of the cosmos, famous for its cloud cities. There they meet busybody little people and the tall listeners to prayer, both residents of the gossamer cities.
Then on they go to the sixth level, in constant twilight, where they confront demigods and their own ambiguous size. And yet higher still to the seventh level where they are in profound darkness. There, they feel surges of great energy sent out from the high deities, best avoided. There, too, does Boy confront the shape-shifter dragon.
Do they return home as they desire? Or will they end in the immense Ocean of the Ancestors flowing across the night sky? There is no simple way to answer these questions. Look where you must, and there will you find.
This is book 2 of 2.