Gods' Games We Play, Vol. 5 (light novel) — Kei Sazane

After completing the supposedly impossible Lucemia labyrinth, all eyes are on Fay. However, he's also caught the eye of an unknown god. Now he's been sucked in to a large-scale game at the world tree against gods that have teamed up! Uroboros, who had picked up on some fishy interference with the labyrinth, meets another god who has an interest in Fay. Big things are happening among gods and humanity, and there's one boy at the center of it all!