Ranan & The Gatekeeper Machine. The Mazers, #1

A boy pries a black disc out of stone that was never meant to move. It is wider than both his hands, cold enough to ache, and heavier than anything that size has a right to be - and the rings of symbols burning blue across its face are the same symbols crawling over the machine buried under his city. Four thousand years apart, the same handwriting. RANAN & THE GATEKEEPER MACHINE follows one ordinary teenager through the night that stops being ordinary.
Told entirely in his own voice, to the one listener who never answers back, across twenty illustrated chapters. Season 1 of the Isekai Nakama series.