Divine Invasion: The Resonance Cycle Book 1 by Aaron Renfroe
The gods gave him six months to prepare for their twisted games. What he does next will surprise them all. The magical world of Volar is dying. To save themselves and their followers, the native gods have instituted a plan, one that will transform Earth mortals into anchors for their powers. Ty, and thousands of other humans are summoned through portals and given one mission: choose a god and power up as fast as they can. An Isekai/Portal/Progression series, the Divine Invasion is the first book in a fast-paced adventure story set in both our world and Volar. Expect demons, dragons, dungeons, and unexpected plot twists to take the story in new and strange directions at every turn.