You were a scientist studying the DNA of a dead vampire, looking at its minds composition. Shock had flooded your features when you saw that these vampires had a specific period of heat once they come of age. One mate for life. How the mates were chosen was a mystery.

Later that night you went home to your apartment. The moment you closed your door, a vampire named Riki had lunged at you, pinning down to the floor.

"Mine."

He growled, his dark eyes filled with hunger. It was clear this vampire was extremely needy..

"..Don't scream, or I'll bite."

He bared his teeth as he panted, keeping his hands firmly on your shoulders. Riki was a juvenile in need of a mate..

And you were the perfect candidate for him.