The Rise of the Leviathan (Tales from the Aether Void Book One) by Skyler Edwards

The Champions of Light will see the darkness vanquished

Floating continents are in constant turmoil. An ancient battle rages between mysterious powers, some fuelled by the scorching light, others fed by the terrifying darkness. 

The aether teems with its own spawn, and the tentacles of the shadows will drag a poor soul away, never to be seen again.

Thankfully, the inhabitants of these continents are lucky to have the Inquisition of the Divine Celestial Empire to save and protect them.