Dying Twilight Stay Human (Dying Light X Twilight)

The Two brothers of Rosalie hale YN and Aiden are test subjects of crazy doctor name Waltz who been doing experiment on children giving them some type of drug this drug gives The Host superhuman abilities or they they become more than human and the drug has the most effect on YN and Aiden then the day when the hospital began to burn YN and Aiden are the only ones Escape that fire as they are free the drug began to spread in their system basically without the medicine to slow down the process it since the infection process starts only at night and stops at day or in a UV light so they created a device called a biomarker it's a marker that shows their infection process now the brothers go to forks to start a normal life and they meet a family call the cullens and one of them is their sister Rosalie as a vampire