Eldritch Revolver - The Zero Song Saga, #1

In the gravity-warped world of Ayu, Indy Ironsights rejects the blood-soaked legacy of his legendary father and the society of violence and war he helped define. But when prodigious scientist Esper Suthmark makes a breakthrough discovery about the nature of the gravity amplifying  Crimson Tower, ancient powers and hidden truths collide, thrusting Indy back into the dangerous world he had hoped had forgotten him.  Brace yourself for a thrilling blend of fantasy and steam-punk fiction in "Eldritch Revolver, " where magic and technology collide, unraveling secrets long kept by unfathomable forces from beyond reality.