Blue Amethyst

"The owner of what you own."
Herayk "the Undefeated" Grimcleave is a living fortress. A warrior with a unique and punishing philosophy, he refuses to raise his guard-choosing to endure the blows of his enemies to prove his cause is just. To the empires he has shattered, he is less of a man and more of a rolling boulder, unstoppable and unyielding.
But the coin flips when he is awarded a unique, elegant, and impossible gemstone as a symbol of honor: the Blue Amethyst.
Soon, the honor becomes a curse. Every month, under the light of the full moon, a brutal assassination tears through the kingdom. The victims aren't faceless aristocrats, but the commoners closest to Herayk's heart. Trapped in a nightmare with zero memory of the nights in question, the world's most righteous warrior discovers that every piece of evidence left behind points to a singular, impossible killer.
Himself.