The Firmament Protocol

"I didn't ask to be reborn. I definitely didn't ask to be named after cheap whiskey."

Before the fragmentation grenade took his life in a dark harbor warehouse, he was a seasoned CBRN (Chemical, Biological, Radiological, and Nuclear) Specialist and a master of Pencak Silat. He knew how to survive, how to control the angles, and how to treat every crisis as a cold, calculable physics problem.

Then came Castiel, the Angel of Fate, with a forced deployment order.

Reincarnated into a foreign world of magic and secret societies, he keeps his memories and his modern tactical conditioning-but there's a catch. To earn his ultimate rest, he must hunt down The Shards of Firmament: ten unstable, reality-warping divine artifacts capable of breaking the foundational laws of existence.

Operating in the shadows as a "Grey Man" under the alias Jack Daniels, he finds himself caught in a brutal, three-way espionage war. On one side stands the authoritarian Genesis Cult, looking to enforce a totalitarian utopia. On the other, the chaotic Demon Clan, eager to plunge the world into absolute oblivion.

Armed with an unassuming machete, an alchemical toolkit that turns fantasy physics on its head, and a deadpan, cynical wit, Jack isn't playing the part of the chosen hero. He's an operator on a contract. And he treats world-ending relics exactly like weapons of mass destruction:

Secure. Contain. Decommission.