The Alpha's Mate Is A Spy

After living a life of emptiness, life as a spy wasn’t something i complained about.
My mother wanted me to live, so i did.
But how can i live when i only have one year left to live?
An oracle told me i would die because i gave away my essence to a boy i met 12 years ago. By then i’ve decided to fulfill my mother’s wish so i agreed to find the boy again.
One day, my birthday came so our alpha tried to give me a day off but i refused.
Instead, I forced my way through the target’s location.
just when i was about to kill the infamous Alpha of Crescent Moon, i realized that he was the same person who i saved 12 years ago!

"I never thought I'll meet my mate like this. You actually dare to kill me?" He growls.

Mates? My eyes widened.