His Frozen Heartbeat

"Stick together, no matter the cost."

Those were the final words of a dying mystic before a village explosion changed everything. She left behind two boys who couldn't stand each other, and two ancient necklaces-a Ruby and a Sapphire-that physically beat with the rhythm of each other's hearts. They couldn't hide their bickering, their anger, or the undeniable, fated pull between them.

But destiny is cruel. Captured in a brutal vampire raid, Asel is dragged into the dark, while Katsuro is left bleeding in the dirt.

Four years later, seventeen-year-old Katsuro is an elite soldier in the human Asam Army, trained to slaughter mystical beasts. He only lives for one thing: the icy, dangerously slow heartbeat pulsing against his collarbone-proof that his soulmate is still alive.

But when they finally meet on the battlefield, his fated match isn't human anymore. Asel is a ruthless half-vampire, a sworn enemy of mankind. When steel meets steel, their long-lost necklaces erupt into a violent, synchronized rhythm.

Can a fated bond survive when your soulmate becomes the very monster you were trained to kill?